Malacoplakia, a rarely encountered inflammatory process, is characterized by a mass-like accumulation of foamy histiocytes and pathognomonic intracellular siderocalcific Michaelis-Gutmann bodies. 1 von Hansemann D Über Malakoplakie der Harnblase [German]. Virchows Arch. 1903; 173: 302-308 Crossref Scopus (172) Google Scholar Although it most commonly involves the urinary tract, malacoplakia has been found in most body organs. 2 McClure J Malakoplakia [review]. J Pathol. 1983; 140: 275-330 Crossref PubMed Scopus (135) Google Scholar Clinically, it can mimic a neoplasm because it frequently presents as a mass. 3 Colby TV Malakoplakia. Two unusual cases which presented diagnostic problems. Am J Surg Pathol. 1978; 2: 377-382 Crossref PubMed Scopus (30) Google Scholar , 4 Ferreira AA Alvarenga M Malakoplakia of the prostate confused with clear cell carcinoma. J Urol. 1976; 116: 828-829 PubMed Google Scholar For definitive diagnosis, histopathologic examination almost always is required. Among 86 reported cases of GI malacoplakia, the colorectum was the site of involvement in the majority; only 6 cases of gastric involvement have been recorded. 5 Yunis EJ Estevez JM Pinzon GJ Moran TJ Malacoplakia. Discussion of pathogenesis and report of three cases including one of fatal gastric and colonic involvement. Arch Pathol. 1967; 83: 180-187 PubMed Google Scholar , 6 Scheiner C Dor AM Basbous D Lebreuil G Malacoplakia: anatomoclinical forms. Review of the literature, apropos of 15 personal cases [French]. Arch Anat Pathol (Paris). 1975; 23: 199-208 PubMed Google Scholar , 7 Nakabayashi H Ito T Izutsu K Yatani R Ishida K Malakoplakia of the stomach. Report of a case and review of the literature. Arch Pathol Lab Med. 1978; 102: 136-139 PubMed Google Scholar , 8 Flint A Murad TM Malakoplakia and malakoplakia like lesions of the upper gastrointestinal tract. Ultrastruct Pathol. 1984; 7: 167-176 Crossref PubMed Scopus (12) Google Scholar , 9 Kao JL Chen RJ Fang JF Lin BC Pang LC Malakoplakia of the mesocolon with gastric serosa invasion: a case report and review of the literature. Changgeng Yi Xue Za Zhi. 1998; 21: 103-108 PubMed Google Scholar , 10 Westra SJ Verbeeten Jr, B Bots TC Tio TL Tytgat GN Brummelkamp WH Reeders JW Urinary tract malakoplakia with extension into the retroperitoneum with secondary gastrointestinal involvement. Urol Radiol. 1988; 10: 181-185 Crossref PubMed Scopus (4) Google Scholar A case of primary gastric malacoplakia is described.