Lymph node involvement revealing a lymphomatous polyposis of the gastrointestinal tract.

The digestive tract is the most frequent site of extranodal malignant lymphomas. Lymphomatous polyposis is one of them, and its prognosis is poor. It corresponds to a digestive localization of mantle cell lymphoma. In most cases it is discovered following digestive symptoms. However, in some cases this digestive malignant lymphoma may be asymptomatic. Thus complete endoscopic exploration of the digestive tract including biopsies is necessary for every patient presented with lymph node mantle cell lymphoma.