Diffuse large B cell lymphoma of the rectosigmoid junction: case report and literature review.

Primary colorectal lymphoma (PCL) is a rare condition that accounts for asmall percentage of all gastrointestinal (GI) malignancies. There are severalreports in the literature regarding the most common features of PCL. However,primary lymphoma in the rectosigmoid junction has been rarely reported. Ourcase was a 67-year-old male who presented with non-specific symptoms ofbowel obstruction which, upon further workup, was diagnosed as a rare case ofPCL located in the rectosigmoid junction.