Gastrointestinal Symptom-Free Multiple Lymphomatous Polyposis: An Atypical Case Presentation of Mantle Cell Lymphoma.

Introduction: Mantle cell lymphoma (MCL), a rare non-Hodgkin's lymphoma, exhibits a genetic translocation causing CCND1 gene overexpression, affecting 5% of NHL cases, predominantly in males aged 60-70. Typically diagnosed with advanced symptoms, MCL involves widespread disease and organ spread, being aggressive and incurable with a 1.8-9.