Abstract
Multiple myeloma(MM) is a neoplastic proliferation of monoclonal plasma cells that can result in osteolytic bone lesions, hypercalcemia, renal impairment, bone marrow failure, and the production of monoclonal gammopathy. When the plasma cells infiltrate outside the bone marrow it is known as extramedullary progression, which usually involves the reticuloendothelial system such as the liver, lymph nodes and the spleen. Involvement of the gastrointestinal tract is rare. There have been only a few endoscopic descriptions of gastric involvement of MM and there are no reports describing the findings of magnifying endoscopy using a narrow-band imaging system. We present a case of MM with gastric involvement observed using NBI endoscopy with magnification in addition to conventional white light endoscopy.
