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KMID : 0359020070350050332
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Korean Journal of Gastrointestinal Endoscopy
2007 Volume.35 No. 5 p.332 ~ p.336
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A Case of a Pedunculated Exoluminal Gastrointestinal Stromal Tumor in the Stomach
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Kim Young-Ji
Choi Jai-Hyun
Kim Eun-Sun
Lee Dong-Hun
Park Nark-Soon
Koo Ja-Seol
Jung Sung-Woo
Yim Hyung-Joon
Lee Hong-Sik
Lee Sang-Woo
Ryu Ho-Sang
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Abstract
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A 49-year-old man visited our hospital with a complaint of a left lower quadrant abdominal mass. Abdominal computed tomography (CT) showed an exophytic tumor attached to the stomach; the marginal region was intensely enhanced as seen on contrast imaging in the delayed phase. The gastric tumor was excised using a laparoscopic procedure. The gastric tumor was removed along with the gastric wall where the tumor was attached to by a pedicle. The external surface of the tumor showed a well-encapsulated appearance and several engorged vessels. Histologically, the tumor cells had a clear or eosinophilic cytoplasm and round nuclei. Four mitotic figures were seen per 50 cells on a high power field. Immunohistochemical staining demonstrated positive expression of c-kit, CD34, and vimentin and negative expression of smooth muscle actin (SMA) and S-100. The final diagnosis was a pedunculated exoluminal gastrointestinal stromal tumor (GIST). (Korean J Gastrointest Endosc 2007;35:332- 336)
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KEYWORD
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Gastrointestinal stromal tumor, External, Peduncle
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