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PREVENTION CONTROL AND TREATMENT OF CANCER IN UGANDA

CANCER -CLASSIFICATION, CAUSES, PREVENTION, CONTROL AND MANAGEMENT IN UGANDA Dr. Wadembere Ibrahim Jangu, Makerere University of Health and Allied Sciences 2012 Cancer is a class of diseases characterized by abnormal growth of cells Pathophysiology   In cancer, the genes which regulate cell growth and differentiation are altered. Oncogenes are genes which promote cell growth and reproduction while Tumor suppressor genes are genes which inhibit cell division and survival.  Malignant transformation can occur through the formation of novel oncogenes, the inappropriate over-expression of normal oncogenes, Or by the under-expression or disabling of tumor suppressor genes.  Genetic changes can occur at different levels and by different mechanisms. The gain or loss of an entire chromosome can occur through errors in mitosis. More common are mutations, which are changes in the nucleotide sequence of genomic DNA Demographic distribution  Cancer is widely spread in Uganda with Kampala district having the highest prevalence which could probably be due to low awareness and screening in upcountry districts. Classification  Carcinoma: Cancers derived from epithelial cells. This group includes many of the most common cancers, particularly in the aged, and include nearly all those developing in the breast, prostate, lung, pancreas, and colon.  Sarcoma: Cancers arising from connective tissue (i.e. bone, cartilage, fat, nerve), each of which develop from cells originating in mesenchymal cells outside the bone marrow.  Lymphoma and leukemia: These two classes of cancer arise from hematopoietic (bloodforming) cells that leave the marrow and tend to mature in the lymph nodes and blood, respectively  Germ cell tumor: Cancers derived from pluripotent cells, most often presenting in the testicle or the ovary (seminoma and dysgerminoma, respectively).  Blastoma: Cancers derived from immature "precursor" cells or embryonic tissue. Blastomas are more common in children than in older adults. Causes          genetic predisposition Infectious agents such as Human papilloma virus, Hepatitis B virus, epstein barr virus Radiation Obesity Diet such as high salt intake Hormones such as estrogen alcohol drugs frequent radiation is a risk factor for cancer chemicals such as tobacoo, asbestos, benzene, or formaldehyde Diagnosis   tissue biopsy is done and can show cellular proliferation Imaging techniques such as X-rays, Computerized Tomography (CT) scans, Magnetic Resonance Imaging (MRI) scans, positron emission tomography (PET) scans, and ultrasound scans can also be used. Management        surgery chemotherapy radiation therapy immunotherapy Hormonal therapy Gene therapy palliative care A man undergoing excision surgery for a tumor Effects and implications on Public Health     Loss of many lives High costs incurred in cancer treatment It predisposes victims to superimposed infections. Increased morbidity associated with cancer Prevention and Control The government of Uganda along side international and local agenices are involved in the prevention and control of cancer, these include World Health Organization, USAID, Uganda Women Cancer Support Organization and many others. Prevention and control is done at national and individual level and include;  Health education and advocacy on cancer prevention and control mainly focussing on behavioural change such as alcohol intake and cigarette smoking        Early detection through regular screening Vaccination such as Hepatitis B Vaccine Early treatment and management of cancer patients. Improved diet such as low fat foods and high vegetables and fruit intake Use of drugs such as tamoxifen that reduce the risk of breast cancer Avoiding Ultra Violet (sun) light genetic testing, such that carriers of these mutations may than undergo enhanced surveillance, chemoprevention.  Monitoring and Evaluation of cancer control programmes Recommendations for the prevention and control of cancer in Butaleja district  Behavioural change communication for people to change dietary habits like eating raw groundnuts that contain alpha-toxins responsible for liver cancer.  Health education so as people are aware about the presence of cancers not to associate such diseases to cultural beliefs such as witchcraft.  Equip health facilities with trained personnel and equipments for early detection of cancer.  Establish a district cancer registry and follow-up system of cancer patients.