Plasmocytoma of the jejunum: diagnosis by double-balloon enteroscopy.

Multiple myeloma (MM) or Kahler’s disease is a malignant neoplasia of the lymphoplasmocyte lineage, characterized by uncontrolled and progressive proliferation of an abnormal plasmocyte clone within the bone marrow (BM) with subsequent production of monoclonal immunoglobulin. On the other hand, focal plasmocyte tumors (plasmocytomas) with formation of tumorous masses without medullary involvement may rarely affect the gastrointestinal tract (GIT) and are denominated solitary extramedullary plasmocytomas. The main extramedullary site of plasmocytoma is the jejunum. We report a patient who presented with jejunal plasmocytoma and emphasize the importance of the double-balloon endoscope for diagnosis of the lesion. 2