Diffuse Involvement of Primary Colorectal Lymphoma Simulating Ulcerative Colitis

Diffuse involvement of colorectal lymphoma masquerading as colitis is a very rare presentation of primary colorectal lymphoma. Detecting occult lymphoma is difficult in the setting of diffuse colonic involvement with no definite mass and inflammatory mucosal changes. We encountered a case of diffuse-type primary colorectal lymphoma simulating ulcerative colitis in a previously healthy 31-year-old woman. Despite multiple mucosal biopsies, the biopsy diagnosis was not made due to unawareness of atypical lymphocytes admixed with dense lymphoplasmacytic infiltration. The present case emphasizes the importance of being aware of this rare presentation of primary colorectal lymphoma in order to avoid misdiagnosis.

Treatment and prognostic factors of primary colorectal non-Hodgkin's lymphoma / 中国癌症杂志

Purpose:To study the clinical characteristics of primary colorectal non Hodgkin's lymphoma, analyze the prognostic factors, and assess the results of treatment with adjuvant chemotherapy and radiotherapy. Methods:Ninety four patients were restrospectively studied at our institution between 1971 and 1995, and all of them underwent operation and were confirmed primary colorectal non Hodgkin's lymphoma pathologically. Adjuvant chemotherapy and radiotherapy were administered to 77 and 83 patients respectively. The univariate and multivariate analysis were used to estimate the prognostic factors.Results:The 3 , 5 , and 10 year survival rate was 62.5%, 61.0%, and 58.9% respectively. By univariate analysis, the operation type, lymph node metastasis, postoperative chemotherapy, postoperative radiotherapy, clinical stage were the significant prognostic factors for survival ( P