Rectal Leiomyoma with Fibromuscular Obliteration Mimicking Adematous Lesion

H. Nakase; M. Ide; S. Yazumi; N. Watanabe; T. Itoh; M. Matsuura; C. Kawanami; K. Okazaki; T. Chiba

doi:10.1055/s-2002-20301

Endoscopy, Table of Contents

Endoscopy 2002; 34(3): 241
DOI: 10.1055/s-2002-20301

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Rectal Leiomyoma with Fibromuscular Obliteration Mimicking Adematous Lesion

H. Nakase¹ , M. Ide² , S. Yazumi¹ , N. Watanabe¹ , T. Itoh¹ , M. Matsuura¹ , C. Kawanami¹ , K. Okazaki¹ , T. Chiba¹

¹Division of Gastroenterology and Endoscopic Medicine, Graduate School of Medicine, Kyoto University, Kyoto, Japan
²Nishiki Clinic, Sasayama, Hyogo, Japan

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Figure 1 A 54-year-old man with a main complaint of hematochezia underwent colonoscopic examination, which revealed a sessile elevated lesion with reddish mucosa on the surface at the rectum. Endoscopic mucosal resection was done without complications

Figure 2 Histological examination showed this tumor to be mainly composed of Ieiomyocytes in the submucosa (a, × 20), with fibromuscular obliteration in the lamina propria (b, × 200). We speculate that mucosal prolapse by evacuation might result in epithelial change on the surface of rectal leiomyoma