1996-1999 Cancer Registry,Oncology Unit, Hospital Universitario Ramón González Valencia,

Malignant tumors are one of the first causes of mortality in Colombia.We like to establish frequency, distribution by gender andage, histology and clinical stage of malignant tumors from Unidadde Oncología del Hospital Univesitario Ramón González Valenciaduring 1996-1999. We only included subjects more than 11 years oldwith histopahological diagnosis confirmed. Data were obtained fromclinical charts. We obtained 2.011 cancer records; female were morefrequent affected (63,5%). The most frequently cancer was: cervix(17,0%), skin (14, 4%), female breast (12,2%), stomach (8,2%), lung(4,4%), prostate (2,7%), thyroid (2,4%), ovary and annexes (2,3%),rectum (2,3%), and esophagus (2,0%). The histopathologycal typeswere: Squamous cell carcinoma in cervix uteri (85.2 %), basocelularcarcinoma in skin (67,0%), invasive intraductal in female breast(78,0%), intestinal adenocarcinoma in stomach (32,1%), adenocarcinomain lung (21,3%), adenocarcinoma in prostate (76,4%), papilarcarcinoma in thyroid (43,0%), serous papilar cystadenocarcinoma inovary and annexes (10,6%), adenocarcinoma in colon and rectum(57,4%), and squamous cell carcinoma in esophagus (24,4%). Thefirst four diseases entities were preventable, reflected our need toimprove education in health promotion and prevention. We hope thatthis study will be the basis for future cancer’s risk factors studies.