EUS with EMR of an inflammatory myofibroblastic tumor of the stomach.

摘要

Inflammatory myofibroblastic tumor, a benign lesion originally described in the liver, has several synonyms, including inflammatory pseudotumor, inflammatory myofibroblastic pseudotumor, plasma cell granuloma, inflammatory myofibroblastoma, and inflammatory myofibrohistiocytic proliferation. This tumor consists of prolifer-ative myofibroblasts and of a mixed inflammatory infiltrate composed mainly of lymphocytes, eosinophils, histiocytes, and plasma cells within a collagenous or myxoid matrix. Most reported cases occur in the pediatric population and have been treated surgically because of diagnostic uncertainty and presumed risk of progression. Described herein is a case of a woman with a history of peptic ulcer disease (PUD) who presented with a gastric inflammatory myofibroblastic tumor. The lesion was submucosal and was diagnosed by a combination of EUS and EMR, without surgical resection.