[Association of Lynch syndrome and non-Hodgkin's malignant lymphoma. A case report].

A patient is described, with Lynch syndrome, typified by hereditary appearance in young age of synchronous and metachronous proximal colorectal cancer, without polyposis, and often associated with extracolonic cancer, particularly ovarian and endometrial carcinomas. The study of our patient's pedigree showed the occurrence of eleven colonic cancers. Our patient had ovarian carcinoma, tumor of the rectum and non-Hodgkin's lymphoma.