1992 Volume 34 Issue 1 Pages 74-80_1
It is often said that primary malignant lymphoma of the rectum is a rare disease. We have done a clinicopathological study including the prognostic factor, in 4 cases we recently experienced and 53 cases which were reported in Japan. Clinical symptoms often were anal bleeding and bloody feces. The findings of image examination and macroscopic findings often showed submucosal tumor-like lesions or ulcerative lesions with marginal walls. It is sometimes difficult to diagnose by means of biopsy before surgery, because the lesion is located in the submucosal layer. Pathological findings often showed diffuse lymphoma which resulted from B-cell type. It is to be desired that chemotherapy is made an addition to resection of the lesion surgically. It is often said that the general prognosis is extremely poor. In this report, we thought that the Working-Formulation which was used for international classification of pathological findings and its grades were one of the impor-tant prognostic factors.
