AbstracObjectives: The aim of the study is to determine the clinico-pathological features of primary colorectal malignant tumors and comparison with earlier studies. Materials and Methods: 92 patients with primary colorectal tumors diagnosed over a 5 year period studied clinically and histopathologically they were classified using the WHO classification of colorectal malignancies. primary gastrointestinal tumors Diagnosis. Result: 92 patients (30.6%) were colorectal malignancies arising out of 300 primary gastrointestinal malignancies, with a female to male ratio of 1 : 1.5. Majority were males, majority were non vegetarians and most of the males were alcoholics and smokers. The mean age of the male patients was 53 years with age varying from 21 –84 years, while for females, the mean age was 58 years, ranging from 17-68 years. Abdomen pain and altered bowl habits was the most common presenting symptom (60%), and the most common primary site was rectum 43 (46.7%), followed by anal canal 17 (18.4%). Most of the colorectal tumors were polypoidal 45(48.9%), followed by ulcerative 34(36.9%) and annular constricting 13(14.2%) and adenocarcinoma was the common histological type. Conclusion: Primary large bowel malignancy constitute about 30.6% of all gastricintestinal malignancies males commonly affected (1.5:1) and more common in alcoholics and non vegetatrians. Abdomen pain and altered bowel habits was the common presenting symptom, polypoidal growth 46.9%, followed by ulcerative type 36.9% and annular constricting growth 14.2% is common gross presentation (67.7 %). Common site involved is rectum 46.7%. Adenocarcinoma 81.5 was the common histological type followed by squamous cell carcinoma 6.5%.

Keywords: Primary large bowel malignancy, colorectal carcinomas.