In 1994 our group began its experience with pediatric liver transplantation. The experience gaine... more In 1994 our group began its experience with pediatric liver transplantation. The experience gained during this period is the largest in the country, positioning the Hospital Luis Calvo Mackenna and Clinica Las Condes as major referral centers in the public and private sectors. The aim of this study was to report our experience of our pediatric liver transplantation program during this period. The liver transplantation database of Hospital Luis Calvo Mackenna and Clinica Las Condes between January 1994 and July 2011 was reviewed recording age, gender, indications for transplantation, surgical technique, complications, and survival. Survival rates were calculated using Kaplan-Meier analysis. During the period described 230 transplantations were performed in 189 pediatric patients. Fifty-five percent were male patients. The average age was 5 years. The main causes of transplantation were biliary atresia (50%), fulminant hepatic failure (25%), and other cholestatic diseases by 10%. Vascular and biliary complications were the leading cause of graft loss and retransplantation. The overall rate of retransplantation at 5 years was 20%. The technique of living donor was used in 28% of the cases. The 1-year patient actuarial survival rate was 80%, 73% at 5 years, and 68% at 10 years. In the last 3 years the survival rate at 1 year exceeds 90%. Our program includes more than 90% of the national liver experience. The incorporation of living donor is a milestone that has enabled us to save many patients who previously died while waiting for an organ. Its use in cases of full acute liver failure has allowed us to dramatically reduce mortality on the waiting list. Our results in the last 3 years reflect the experience that results in a significant decrease in mortality, comparing favorably to other series published in the international literature.
Orthotopic liver transplantation (OLT) remains a major medical and surgical challenge in small pe... more Orthotopic liver transplantation (OLT) remains a major medical and surgical challenge in small pediatric patients. From April 2003 through October 2005, 17 infants (each of whom weighed less than 10 kg) underwent the procedure. Four were girls and 13 were boys (mean age, 15.7 Ϯ 9.3 months [range, 2-36 months]; mean weight at the time of transplantation, 7.4 Ϯ 2.6 kg [range, 6-10 kg]). All transplants were obtained from living-related donors. Sixteen left lateral segments and 1 left lobe were transplanted. The median graft-to-recipient weight ratio was 3.5% Ϯ 1.2% (range, 1.5%-6.1%). During the early postoperative period, hepatic arterial thrombosis was identified in 2 infants, and a biliary leak in 1. Hepatic arterial thrombosis was treated by reanastomosis with polytetrafluoroethylene grafting in the first patient and by surgical embolectomy in the second. The biliary leak was treated with percutaneous drainage. In 1 infant, portal vein stenosis, which was identified during the late postoperative period, was treated by percutaneous balloon dilatation. At this time, 14 (82.3%) infants were alive, exhibiting good graft function at a median follow-up of 11 months (range, 2-36 months). Three infants died: 1 on postoperative day 47 from adult respiratory distress syndrome, 1 on postoperative day 12 from sepsis, and 1 on postoperative day 65 from sepsis associated with EBV infection. Episodes of acute rejection, which occurred in 5 patients, were treated with pulse steroid therapy. On follow-up, histologic examination revealed hepatocellular carcinoma in 2 infants and Burkitt's lymphoma in 1 infant. Our data confirm that extensive use of living-related donors in liver transplantation can result in an excellent outcome for small pediatric patients.
Peutz-Jeghers syndrome (PJS) is an autosomal dominant disorder characterized by mucocutaneous mel... more Peutz-Jeghers syndrome (PJS) is an autosomal dominant disorder characterized by mucocutaneous melanocytic macules, gastrointestinal hamartomatous polyposis and an increased risk of various neoplasms. Germline mutations in the serine/threonine kinase 11 (STK11) gene have been identified as a cause for PJS. The aim of this study was to characterize the genotype of Chilean PJS patients. Mutation screening of 13 patients from eight PJS families was performed using a single strand conformation polymorphism analysis, DNA sequencing and multiplex ligation-dependent probe amplification assay. The breakpoints of the genomic rearrangements were assessed by a long-range polymerase chain reaction and sequencing. The results revealed the existence of seven different pathogenic mutations in STK11 gene in seven unrelated families, including three point mutations and four large genomic deletions. Three of these point mutations (43%, 3/7) may be considered as novel. Our results showed that a germline mutation is present in STK11 in 88% of probands fulfilling the diagnostic criteria of PJS. In this study, the combination of two different experimental approaches in the screening of the STK11 in PJS, led to a higher percentage of mutation detection.
Peutz-Jeghers syndrome (PJS) is an autosomal dominant disorder characterized by mucocutaneous mel... more Peutz-Jeghers syndrome (PJS) is an autosomal dominant disorder characterized by mucocutaneous melanocytic macules, gastrointestinal hamartomatous polyposis and an increased risk of various neoplasms. Germline mutations in the serine/threonine kinase 11 (STK11) gene have been identified as a cause for PJS. The aim of this study was to characterize the genotype of Chilean PJS patients. Mutation screening of 13 patients from eight PJS families was performed using a single strand conformation polymorphism analysis, DNA sequencing and multiplex ligation-dependent probe amplification assay. The breakpoints of the genomic rearrangements were assessed by a long-range polymerase chain reaction and sequencing. The results revealed the existence of seven different pathogenic mutations in STK11 gene in seven unrelated families, including three point mutations and four large genomic deletions. Three of these point mutations (43%, 3/7) may be considered as novel. Our results showed that a germline mutation is present in STK11 in 88% of probands fulfilling the diagnostic criteria of PJS. In this study, the combination of two different experimental approaches in the screening of the STK11 in PJS, led to a higher percentage of mutation detection.
Acute abdominal pain caused by perforation, intestinal lymphoma or intussusception is an uncommon... more Acute abdominal pain caused by perforation, intestinal lymphoma or intussusception is an uncommon manifestation in adult celiac disease. We report a 49 year-old female with history of irritable bowel syndrome and osteoporosis consulting for acute abdominal pain and severe abdominal distention. Abdominal CT scan and magnetic resonance imaging showed a jejunal intussusception and other radiological alterations that suggested the possibility of celiac disease. Serological antibodies (endomysial and transglutaminase antibodies), endoscopy and the pathological study of duodenal biopsies confirmed the diagnosis. With a gluten free diet, the patient remains asymptomatic.
Lynch syndrome (LS) is associated with the highest risk of colorectal (CRC) and several extracolo... more Lynch syndrome (LS) is associated with the highest risk of colorectal (CRC) and several extracolonic cancers. In our effort to characterize LS families from Latin America, this study aimed to describe the spectrum of neoplasms and cancer risk by gender, age and gene, and survival in 34 Chilean LS families. Of them, 59% harbored path_MLH1, 23% path_MSH2, 12% path_PMS2 and 6% path_EPCAM variants. A total of 866 individuals at risk were identified, of which 213 (24.6%) developed 308 neoplasms. In males, CRC was the most common cancer (72.6%), while females showed a greater frequency of extracolonic cancers (58.4%), including uterus and breast (p < 0.0001). The cumulative incidence of extracolonic cancers was higher in females than males (p = 0.001). Path_MLH1 variants are significantly more associated with the development of CRC than extracolonic tumors (59.5% vs. 40.5%) when compared to path_MSH2 (47.5% vs. 52.5%) variants (p = 0.05018). The cumulative incidence of CRC was higher i...
The Hartmann&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;... more The Hartmann&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s operation, although less frequently performed today, is still used when initial colonic anastomosis is too risky in the short term. However, the subsequent procedure to restore gastrointestinal continuity is associated with significant morbidity and mortality. The review of an institutional review board (IRB)-approved prospectively maintained database provided data on the Hartmann&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s reversal procedure performed by either laparoscopic or open technique at our institution. The data collected included: demographic data, operative approach, conversion for laparoscopic cases and perioperative morbidity and mortality. Over a 14-year period from January 1997 to August 2011, 74 Hartmann&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s reversal procedures were performed (laparoscopic surgery-49, open surgery-25). The average age was 55 years for the laparoscopic and 57 years for the open surgery group, respectively. Male patients represent 61% of both groups. There was no significant difference in operative time between the two groups (149 min vs 151 min; P = 0.95), and there was a tendency to lower morbidity (3/49-7.3% vs 4/25-16%; P = 0.24) in the laparoscopic surgery group. In the laparoscopic group, eight patients (16.3%) were converted to open surgery, mostly due to severe adhesions. The length of hospital stay was significantly shorter for the laparoscopic group (5 days vs 7 days; P = 0.44). The Hartmann&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s reversal procedure can be safely performed in the majority of the cases using a laparoscopic approach with a low morbidity rate and achieving a shorter hospital stay.
INTRODUCCIÓN La primera atención del paciente politraumatizado debe incluir la llamada "evaluació... more INTRODUCCIÓN La primera atención del paciente politraumatizado debe incluir la llamada "evaluación inicial", caracterizada por un examen clínico rápido pero acucioso, del manejo de la vía aérea, de las características de la ventilación, del estatus circulatorio, neurológica simple y exposición completa del paciente, lo que constituye el ABCDE del manejo inicial del trauma. En caso de que se pesquisen alteraciones que pongan en MANEJO INICIAL Y CONCEPTOS EN TRAUMA: VÍA AÉREA, REPOSICIÓN DE VOLUMEN, TORACOTOMÍA DE URGENCIA
La Hernia Paracolostómica (HP) es una patología frecuente en pacientes portadores de una ostomía ... more La Hernia Paracolostómica (HP) es una patología frecuente en pacientes portadores de una ostomía definitiva y presenta grandes desafíos en su tratamiento, lo que está determinado principalmente por el alto porcentaje de recidiva a pesar de las distintas técnicas utilizadas en su reparación. Dentro de las más recientes, la reparación con malla intraperitoneal por vía laparoscópica aparece como una alternativa promisoria dada las características del procedimiento: Mínima tensión y mínima invasión. Se presentan dos pacientes, con colostomías definitivas y hernias paracolostómicas secundarias, en quienes se reparó el defecto con una malla para uso intraperitoneal mediante técnica laparoscópica. Ninguno de los pacientes presentó complicaciones intra ni postoperatorias. En un seguimiento a corto plazo no se ha observado recidiva. Se revisa y discute bibliografia reciente al respecto.
Short-and long-term results with Karydaki's technique for sacrococcygeal pilonidal disease Introd... more Short-and long-term results with Karydaki's technique for sacrococcygeal pilonidal disease Introduction: Sacrococcygeal pilonidal cyst or sinus is a common condition in young people. There is still discussion about which of the many existing techniques is best suited to resolve this condition. Objective: To analyze the short-and long-term use of Karydaki's technique in our Hospital. Material and Methods: We analyzed prospective protocols from patients with pilonidal cyst with Karydaki's technique from June 2005 to August 2010. Clinical and telephonic follow-up was done to all patients and a satisfaction survey done to a random sample of the series. Results: We analyzed 62 patients with mean age of 24.5 years (15-45), being 33 men (53%). Cysts were previously relapsed in 20.9% of cases. The average hospital stay was 2.5 days (1-3). Early complications occurred in 14.3% of patients being the most common seroma in 8% and dehiscence in 6.4%. At a mean follow up of 38 months (12-62), relapse occurred in two patients (3.2%), one at 6 months and the other at 3 years, being resolved one by a new Karydaki's technique and the other with marsupialization. Among the group surveyed for satisfaction, 75% found the technique satisfactory or very satisfactory in terms of aesthetics and 95% would recommend this technique. Conclusions: Karydaki's operation achieves with a simple and aesthetic technic a low recurrence and morbidity and a complete recovery after 15 days in most patients.
Satisfaction survey of patients after hemorrhoid surgery using the procedure for prolapse and hem... more Satisfaction survey of patients after hemorrhoid surgery using the procedure for prolapse and hemorrhoids (PPH) technique Background: Hemorrhoidal disease is very common and approximately 10% of the patients require surgery. Within the different surgical techniques, the Longo procedure or PPH (procedure for prolapse and hemorrhoids) has gained importance. Aim: To evaluate the patients' perception of PPH hemorrhoidectomy in a medium term follow-up. Material and Methods: All patients undergoing PPH hemorrhoidectomy between January 2007 and January 2009 were identifi ed. A survey was designed to assess the presence of specifi c symptoms before and after surgery, and applied to all patients. Results: Fifty-seven patients completed the survey, with a follow-up ranging from 8 to 31 months. Ninety-four percent of patients referred improvement of bleeding, 85% of hemorrhoidal prolapse and 68% of soiling after the intervention. On a scale of 1 to 7, 88% of patients rated the procedure with a score over 5, and 87% would recommend the use of this technique to other patients suffering from the disease. Conclusions: Most patients favorably assess PPH hemorrhoidectomy in terms of postoperative resolution of the symptoms, functional status and overall satisfaction in a medium-term follow-up.
Acute abdominal pain caused by perforation, intestinal lymphoma or intussusception is an uncommon... more Acute abdominal pain caused by perforation, intestinal lymphoma or intussusception is an uncommon manifestation in adult celiac disease. We report a 49 yearold female with history of irritable bowel syndrome and osteoporosis consulting for acute abdominal pain and severe abdominal distention. Abdominal CT scan and magnetic resonance imaging showed a jejunal intussusception and other radiological alterations that suggested the possibility of celiac disease. Serological antibodies (endomysial and transglutaminase antibodies), endoscopy and the pathological study of duodenal biopsies confirmed the diagnosis. With a gluten free diet, the patient remains asymptomatic.
RESUMEN El cáncer de vesícula biliar (CVB) corresponde a una patología altamente prevalente en nu... more RESUMEN El cáncer de vesícula biliar (CVB) corresponde a una patología altamente prevalente en nuestro país, alcanzando incluso la más alta de incidencia del mundo. Lamentablemente es una enfermedad que sólo presenta síntomas cuando ya se encuentra en estados avanzados. Dentro de los factores de riesgo, la colelitiasis, la obesidad, la edad, el género, infecciones bacterianas y algunos factores genéticos ocupan una posición relevante en su etiopatogenia. El diagnóstico se realiza principalmente por imágenes como la Ultrasonografía (US) y la Tomografía Computada (TC), sin embargo el uso de otros métodos como la Resonancia Nuclear Magnética (RNM) son de gran utilidad. Dentro del diagnóstico se utilizan también algunos marcadores tumorales que pueden servir de ayuda en el seguimiento y el pronóstico en algunos casos. La cirugía es el tratamiento de elección sobre todo en etapas iniciales, ya que muchas veces esta enfermedad se pesquisa como hallazgo de colecistectomías de rutina por colelitiasis.
Recurrence of low risk small bowel GIST tumor. Case report and revision of the literature Gastroi... more Recurrence of low risk small bowel GIST tumor. Case report and revision of the literature Gastrointestinal stromal tumors (GIST) are the most common mesenchymatic neoplasm in the digestive tract, representing about 1% of malignant gastrointestinal lesions. Seventy to eighty percent are benign according to their size and mitotic index as predictors of malignancy. However, in the presence of relapses in patients with low risk according to the current classification and in light of new adjuvant therapies (Imatinib Mesylate), have defined new parameters for estimation of malignant potential.
In 1994 our group began its experience with pediatric liver transplantation. The experience gaine... more In 1994 our group began its experience with pediatric liver transplantation. The experience gained during this period is the largest in the country, positioning the Hospital Luis Calvo Mackenna and Clinica Las Condes as major referral centers in the public and private sectors. The aim of this study was to report our experience of our pediatric liver transplantation program during this period. The liver transplantation database of Hospital Luis Calvo Mackenna and Clinica Las Condes between January 1994 and July 2011 was reviewed recording age, gender, indications for transplantation, surgical technique, complications, and survival. Survival rates were calculated using Kaplan-Meier analysis. During the period described 230 transplantations were performed in 189 pediatric patients. Fifty-five percent were male patients. The average age was 5 years. The main causes of transplantation were biliary atresia (50%), fulminant hepatic failure (25%), and other cholestatic diseases by 10%. Vascular and biliary complications were the leading cause of graft loss and retransplantation. The overall rate of retransplantation at 5 years was 20%. The technique of living donor was used in 28% of the cases. The 1-year patient actuarial survival rate was 80%, 73% at 5 years, and 68% at 10 years. In the last 3 years the survival rate at 1 year exceeds 90%. Our program includes more than 90% of the national liver experience. The incorporation of living donor is a milestone that has enabled us to save many patients who previously died while waiting for an organ. Its use in cases of full acute liver failure has allowed us to dramatically reduce mortality on the waiting list. Our results in the last 3 years reflect the experience that results in a significant decrease in mortality, comparing favorably to other series published in the international literature.
Orthotopic liver transplantation (OLT) remains a major medical and surgical challenge in small pe... more Orthotopic liver transplantation (OLT) remains a major medical and surgical challenge in small pediatric patients. From April 2003 through October 2005, 17 infants (each of whom weighed less than 10 kg) underwent the procedure. Four were girls and 13 were boys (mean age, 15.7 Ϯ 9.3 months [range, 2-36 months]; mean weight at the time of transplantation, 7.4 Ϯ 2.6 kg [range, 6-10 kg]). All transplants were obtained from living-related donors. Sixteen left lateral segments and 1 left lobe were transplanted. The median graft-to-recipient weight ratio was 3.5% Ϯ 1.2% (range, 1.5%-6.1%). During the early postoperative period, hepatic arterial thrombosis was identified in 2 infants, and a biliary leak in 1. Hepatic arterial thrombosis was treated by reanastomosis with polytetrafluoroethylene grafting in the first patient and by surgical embolectomy in the second. The biliary leak was treated with percutaneous drainage. In 1 infant, portal vein stenosis, which was identified during the late postoperative period, was treated by percutaneous balloon dilatation. At this time, 14 (82.3%) infants were alive, exhibiting good graft function at a median follow-up of 11 months (range, 2-36 months). Three infants died: 1 on postoperative day 47 from adult respiratory distress syndrome, 1 on postoperative day 12 from sepsis, and 1 on postoperative day 65 from sepsis associated with EBV infection. Episodes of acute rejection, which occurred in 5 patients, were treated with pulse steroid therapy. On follow-up, histologic examination revealed hepatocellular carcinoma in 2 infants and Burkitt's lymphoma in 1 infant. Our data confirm that extensive use of living-related donors in liver transplantation can result in an excellent outcome for small pediatric patients.
Peutz-Jeghers syndrome (PJS) is an autosomal dominant disorder characterized by mucocutaneous mel... more Peutz-Jeghers syndrome (PJS) is an autosomal dominant disorder characterized by mucocutaneous melanocytic macules, gastrointestinal hamartomatous polyposis and an increased risk of various neoplasms. Germline mutations in the serine/threonine kinase 11 (STK11) gene have been identified as a cause for PJS. The aim of this study was to characterize the genotype of Chilean PJS patients. Mutation screening of 13 patients from eight PJS families was performed using a single strand conformation polymorphism analysis, DNA sequencing and multiplex ligation-dependent probe amplification assay. The breakpoints of the genomic rearrangements were assessed by a long-range polymerase chain reaction and sequencing. The results revealed the existence of seven different pathogenic mutations in STK11 gene in seven unrelated families, including three point mutations and four large genomic deletions. Three of these point mutations (43%, 3/7) may be considered as novel. Our results showed that a germline mutation is present in STK11 in 88% of probands fulfilling the diagnostic criteria of PJS. In this study, the combination of two different experimental approaches in the screening of the STK11 in PJS, led to a higher percentage of mutation detection.
Peutz-Jeghers syndrome (PJS) is an autosomal dominant disorder characterized by mucocutaneous mel... more Peutz-Jeghers syndrome (PJS) is an autosomal dominant disorder characterized by mucocutaneous melanocytic macules, gastrointestinal hamartomatous polyposis and an increased risk of various neoplasms. Germline mutations in the serine/threonine kinase 11 (STK11) gene have been identified as a cause for PJS. The aim of this study was to characterize the genotype of Chilean PJS patients. Mutation screening of 13 patients from eight PJS families was performed using a single strand conformation polymorphism analysis, DNA sequencing and multiplex ligation-dependent probe amplification assay. The breakpoints of the genomic rearrangements were assessed by a long-range polymerase chain reaction and sequencing. The results revealed the existence of seven different pathogenic mutations in STK11 gene in seven unrelated families, including three point mutations and four large genomic deletions. Three of these point mutations (43%, 3/7) may be considered as novel. Our results showed that a germline mutation is present in STK11 in 88% of probands fulfilling the diagnostic criteria of PJS. In this study, the combination of two different experimental approaches in the screening of the STK11 in PJS, led to a higher percentage of mutation detection.
Acute abdominal pain caused by perforation, intestinal lymphoma or intussusception is an uncommon... more Acute abdominal pain caused by perforation, intestinal lymphoma or intussusception is an uncommon manifestation in adult celiac disease. We report a 49 year-old female with history of irritable bowel syndrome and osteoporosis consulting for acute abdominal pain and severe abdominal distention. Abdominal CT scan and magnetic resonance imaging showed a jejunal intussusception and other radiological alterations that suggested the possibility of celiac disease. Serological antibodies (endomysial and transglutaminase antibodies), endoscopy and the pathological study of duodenal biopsies confirmed the diagnosis. With a gluten free diet, the patient remains asymptomatic.
Lynch syndrome (LS) is associated with the highest risk of colorectal (CRC) and several extracolo... more Lynch syndrome (LS) is associated with the highest risk of colorectal (CRC) and several extracolonic cancers. In our effort to characterize LS families from Latin America, this study aimed to describe the spectrum of neoplasms and cancer risk by gender, age and gene, and survival in 34 Chilean LS families. Of them, 59% harbored path_MLH1, 23% path_MSH2, 12% path_PMS2 and 6% path_EPCAM variants. A total of 866 individuals at risk were identified, of which 213 (24.6%) developed 308 neoplasms. In males, CRC was the most common cancer (72.6%), while females showed a greater frequency of extracolonic cancers (58.4%), including uterus and breast (p < 0.0001). The cumulative incidence of extracolonic cancers was higher in females than males (p = 0.001). Path_MLH1 variants are significantly more associated with the development of CRC than extracolonic tumors (59.5% vs. 40.5%) when compared to path_MSH2 (47.5% vs. 52.5%) variants (p = 0.05018). The cumulative incidence of CRC was higher i...
The Hartmann&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;... more The Hartmann&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s operation, although less frequently performed today, is still used when initial colonic anastomosis is too risky in the short term. However, the subsequent procedure to restore gastrointestinal continuity is associated with significant morbidity and mortality. The review of an institutional review board (IRB)-approved prospectively maintained database provided data on the Hartmann&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s reversal procedure performed by either laparoscopic or open technique at our institution. The data collected included: demographic data, operative approach, conversion for laparoscopic cases and perioperative morbidity and mortality. Over a 14-year period from January 1997 to August 2011, 74 Hartmann&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s reversal procedures were performed (laparoscopic surgery-49, open surgery-25). The average age was 55 years for the laparoscopic and 57 years for the open surgery group, respectively. Male patients represent 61% of both groups. There was no significant difference in operative time between the two groups (149 min vs 151 min; P = 0.95), and there was a tendency to lower morbidity (3/49-7.3% vs 4/25-16%; P = 0.24) in the laparoscopic surgery group. In the laparoscopic group, eight patients (16.3%) were converted to open surgery, mostly due to severe adhesions. The length of hospital stay was significantly shorter for the laparoscopic group (5 days vs 7 days; P = 0.44). The Hartmann&amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;amp;#39;s reversal procedure can be safely performed in the majority of the cases using a laparoscopic approach with a low morbidity rate and achieving a shorter hospital stay.
INTRODUCCIÓN La primera atención del paciente politraumatizado debe incluir la llamada "evaluació... more INTRODUCCIÓN La primera atención del paciente politraumatizado debe incluir la llamada "evaluación inicial", caracterizada por un examen clínico rápido pero acucioso, del manejo de la vía aérea, de las características de la ventilación, del estatus circulatorio, neurológica simple y exposición completa del paciente, lo que constituye el ABCDE del manejo inicial del trauma. En caso de que se pesquisen alteraciones que pongan en MANEJO INICIAL Y CONCEPTOS EN TRAUMA: VÍA AÉREA, REPOSICIÓN DE VOLUMEN, TORACOTOMÍA DE URGENCIA
La Hernia Paracolostómica (HP) es una patología frecuente en pacientes portadores de una ostomía ... more La Hernia Paracolostómica (HP) es una patología frecuente en pacientes portadores de una ostomía definitiva y presenta grandes desafíos en su tratamiento, lo que está determinado principalmente por el alto porcentaje de recidiva a pesar de las distintas técnicas utilizadas en su reparación. Dentro de las más recientes, la reparación con malla intraperitoneal por vía laparoscópica aparece como una alternativa promisoria dada las características del procedimiento: Mínima tensión y mínima invasión. Se presentan dos pacientes, con colostomías definitivas y hernias paracolostómicas secundarias, en quienes se reparó el defecto con una malla para uso intraperitoneal mediante técnica laparoscópica. Ninguno de los pacientes presentó complicaciones intra ni postoperatorias. En un seguimiento a corto plazo no se ha observado recidiva. Se revisa y discute bibliografia reciente al respecto.
Short-and long-term results with Karydaki's technique for sacrococcygeal pilonidal disease Introd... more Short-and long-term results with Karydaki's technique for sacrococcygeal pilonidal disease Introduction: Sacrococcygeal pilonidal cyst or sinus is a common condition in young people. There is still discussion about which of the many existing techniques is best suited to resolve this condition. Objective: To analyze the short-and long-term use of Karydaki's technique in our Hospital. Material and Methods: We analyzed prospective protocols from patients with pilonidal cyst with Karydaki's technique from June 2005 to August 2010. Clinical and telephonic follow-up was done to all patients and a satisfaction survey done to a random sample of the series. Results: We analyzed 62 patients with mean age of 24.5 years (15-45), being 33 men (53%). Cysts were previously relapsed in 20.9% of cases. The average hospital stay was 2.5 days (1-3). Early complications occurred in 14.3% of patients being the most common seroma in 8% and dehiscence in 6.4%. At a mean follow up of 38 months (12-62), relapse occurred in two patients (3.2%), one at 6 months and the other at 3 years, being resolved one by a new Karydaki's technique and the other with marsupialization. Among the group surveyed for satisfaction, 75% found the technique satisfactory or very satisfactory in terms of aesthetics and 95% would recommend this technique. Conclusions: Karydaki's operation achieves with a simple and aesthetic technic a low recurrence and morbidity and a complete recovery after 15 days in most patients.
Satisfaction survey of patients after hemorrhoid surgery using the procedure for prolapse and hem... more Satisfaction survey of patients after hemorrhoid surgery using the procedure for prolapse and hemorrhoids (PPH) technique Background: Hemorrhoidal disease is very common and approximately 10% of the patients require surgery. Within the different surgical techniques, the Longo procedure or PPH (procedure for prolapse and hemorrhoids) has gained importance. Aim: To evaluate the patients' perception of PPH hemorrhoidectomy in a medium term follow-up. Material and Methods: All patients undergoing PPH hemorrhoidectomy between January 2007 and January 2009 were identifi ed. A survey was designed to assess the presence of specifi c symptoms before and after surgery, and applied to all patients. Results: Fifty-seven patients completed the survey, with a follow-up ranging from 8 to 31 months. Ninety-four percent of patients referred improvement of bleeding, 85% of hemorrhoidal prolapse and 68% of soiling after the intervention. On a scale of 1 to 7, 88% of patients rated the procedure with a score over 5, and 87% would recommend the use of this technique to other patients suffering from the disease. Conclusions: Most patients favorably assess PPH hemorrhoidectomy in terms of postoperative resolution of the symptoms, functional status and overall satisfaction in a medium-term follow-up.
Acute abdominal pain caused by perforation, intestinal lymphoma or intussusception is an uncommon... more Acute abdominal pain caused by perforation, intestinal lymphoma or intussusception is an uncommon manifestation in adult celiac disease. We report a 49 yearold female with history of irritable bowel syndrome and osteoporosis consulting for acute abdominal pain and severe abdominal distention. Abdominal CT scan and magnetic resonance imaging showed a jejunal intussusception and other radiological alterations that suggested the possibility of celiac disease. Serological antibodies (endomysial and transglutaminase antibodies), endoscopy and the pathological study of duodenal biopsies confirmed the diagnosis. With a gluten free diet, the patient remains asymptomatic.
RESUMEN El cáncer de vesícula biliar (CVB) corresponde a una patología altamente prevalente en nu... more RESUMEN El cáncer de vesícula biliar (CVB) corresponde a una patología altamente prevalente en nuestro país, alcanzando incluso la más alta de incidencia del mundo. Lamentablemente es una enfermedad que sólo presenta síntomas cuando ya se encuentra en estados avanzados. Dentro de los factores de riesgo, la colelitiasis, la obesidad, la edad, el género, infecciones bacterianas y algunos factores genéticos ocupan una posición relevante en su etiopatogenia. El diagnóstico se realiza principalmente por imágenes como la Ultrasonografía (US) y la Tomografía Computada (TC), sin embargo el uso de otros métodos como la Resonancia Nuclear Magnética (RNM) son de gran utilidad. Dentro del diagnóstico se utilizan también algunos marcadores tumorales que pueden servir de ayuda en el seguimiento y el pronóstico en algunos casos. La cirugía es el tratamiento de elección sobre todo en etapas iniciales, ya que muchas veces esta enfermedad se pesquisa como hallazgo de colecistectomías de rutina por colelitiasis.
Recurrence of low risk small bowel GIST tumor. Case report and revision of the literature Gastroi... more Recurrence of low risk small bowel GIST tumor. Case report and revision of the literature Gastrointestinal stromal tumors (GIST) are the most common mesenchymatic neoplasm in the digestive tract, representing about 1% of malignant gastrointestinal lesions. Seventy to eighty percent are benign according to their size and mitotic index as predictors of malignancy. However, in the presence of relapses in patients with low risk according to the current classification and in light of new adjuvant therapies (Imatinib Mesylate), have defined new parameters for estimation of malignant potential.
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