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  • Title: [Inflammatory myoglandular polyp (Nakamura polyp): a case report].
    Author: Vázquez-Reta JA, Tarango-González E, Fierro-Murga R, Vázquez-Guerrero AL, Vázquez-Guerrero AR.
    Journal: Rev Gastroenterol Mex; 2011; 76(2):182-5. PubMed ID: 21724496.
    Abstract:
    Inflammatory myoglandular polyp (IMGP) is a rare nonneoplastic polyp of the large bowel, characterized by inflammatory granulation tissue in the lamina propia, proliferation of smooth muscle and hyperplastic glands with variable degree of cystic changes. Clinical course is benign and etiology unclear, but it has been associated to chronic inflammation due to fecal stasis and abnormal colonic motility. Clinically may be asymptomatic or produce hematochezia. At endoscopy the appearance may be that of a pedunculated or semi-pedunculated polyp, with soft or lobulated surface, with hyperemia and even partial erosions. We present a 33 year-old male with hematochezia caused by an IMGP in the descending colon. Initial diagnosis was a well differentiated adenocarcinoma, which proved to be an IMGP on final pathology. Hematochezia resolved after resection.
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