Abstract:
Objective To examine endoscopic features of early colorectal carcinomas smaller than 2 cm.
Methods A total of 191 patients (201 early colorectal carcinomas) who were definitely diagnosed with early colorectal cancer smaller than 2 cm between January 2014 and December 2017 in Beijing Shijitan Hospital, Capital Medical University were enrolled. The patients' clinical characteristics, endoscopic and pathological data were retrospectively analyzed.
Results There were more male patients than female patients(1.81:1) in the study population; distribution of lesions was higher in the left colon than in the right colon (141/201). Group 1 had ahigher number of Ⅱa lesions (20/67, P=0.037) and a lower number of Ip lesions than Group 2 (52/134, P < 0.01).
Conclusions There arespecial characteristics in distribution and endoscopic manifestations of early colorectal carcinoma. Lesion size was less than 1 cm in 67(191 cases of early colorectal cancer) early colorectal carcinoma cases; however, a high-risk adenoma is defined as a lesion larger than1 cm in size. Therefore, regardless of lesion size, if fractionation, echinodermata, congestion, erosion, expansion, and depression areobserved, the lesion should be assessed in detail for the sake of carcinogenesis.