ABSTRACT
Objective To analyze clinical manifestations, histology, immunohistochemistry (IHC), surgical treatment and prognosis of colorectal stromal tumours. Methods The clinical and pathological data of 30 cases of colorectal stromal tumors were analyzed retrospectively. According to Fletcher proposed approach for defining risk group in GIST, these cases were grouped into VLR, LR, IR and HR.Cox multiple regression multiple factor analysis method was used to evaluate impact factors for prognosis.Results Radical resection was achieved in all 30 cases. Tumors located in the colon in 4 ( 13% ) cases, in the rectum in 20 (67%) cases, and within the anal canal in 6 (20%) cases. C-kit expression was positive in 86. 7% cases as determined by IHC. Postoperatively, 29 cases were followed-up from 4 to 130 mos. The Fletcher proposed approach for defining risk group in GIST was closely related to the survival rates ( B =4. 226,P =0. 02). The 3- and 5-year survival rate was 73% and 53% respectively. Conclusions Surgical resection and molecular target treatment is the treatment of choice for colorectal stromal tumors. The Fletcher's classification of malignancy risk group for colorectal stromal tumors is statistically related to the modus operandi and patients' survival rate.