Mantle cell lymphoma of the colon with massive splenomegaly: A case report.

We describe colonoscopic features in a 77-year-old female with relapse of mantle cell lymphoma, who presented with a history of rectal bleeding of 2 months' duration. Her initial colonoscopy 3 years prior to the current presentation had revealed no gross lesions of mantle cell lymphoma; however, there was evidence of microscopic disease at that time as well. The patient had now developed classical lesions following relapse of the disease. The present case report gives the natural history of this rare tumour. The comparative colonoscopic features with a brief review of mantle cell lymphoma are presented.