Segment of colon with mucosal studding by innumerable polypoid excrescences throughout. Node the addition of large nodules as well. Image

large nodes too Image

concurrent FNA of cervical lymph node shows mantle cell lymphoma -- Diff quick Image

pap stain of lymph node Image

Involvement of GI tract by mantle cell lymphoma yields the special designation of lymphomatoid polyposis. Sometimes this designation may refer to involvement by follicular lymphoma as well.

Individuals may present with abdominal pain, obstruction, or GI bleeding.