A case of KIT negative extra-gastrointestinal stromal tumor arising in the greater omentum with predominant cystic formation

Katsuya Nanjo, MD; Yusuke Nishimuta, MD; Mitsutoshi Miyasaka, MD; Kenji Shinozaki, MD, PhD; Daisuke Tsurumaru, MD, PhD; Kousei Ishigami, MD, PhD

Radiology Case Reports (Aug 2021)

A case of KIT negative extra-gastrointestinal stromal tumor arising in the greater omentum with predominant cystic formation

Katsuya Nanjo, MD,
Yusuke Nishimuta, MD,
Mitsutoshi Miyasaka, MD,
Kenji Shinozaki, MD, PhD,
Daisuke Tsurumaru, MD, PhD,
Kousei Ishigami, MD, PhD

Affiliations

Katsuya Nanjo, MD: Department of Radiology, National Hospital Organization Kyushu Cancer Center, 3-1-1 Notame, Minami-ku, Fukuoka, 811-1395, Japan
Yusuke Nishimuta, MD: Department of Gastrointestinal Endoscopy, National Hospital Organization Kyushu Cancer Center, 3-1-1 Notame, Minami-ku, Fukuoka, 811-1395, Japan
Mitsutoshi Miyasaka, MD: Department of Gastrointestinal Endoscopy, National Hospital Organization Kyushu Cancer Center, 3-1-1 Notame, Minami-ku, Fukuoka, 811-1395, Japan
Kenji Shinozaki, MD, PhD: Department of Radiology, National Hospital Organization Kyushu Cancer Center, 3-1-1 Notame, Minami-ku, Fukuoka, 811-1395, Japan
Daisuke Tsurumaru, MD, PhD: Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan; Corresponding author: D.T
Kousei Ishigami, MD, PhD: Department of Clinical Radiology, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-ku, Fukuoka, 812-8582, Japan

Journal volume & issue: Vol. 16, no. 8
pp. 2315 – 2318

Abstract

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We report a rare case of KIT-negative extra-gastrointestinal stromal tumor, in a 40-year-old woman. Contrast-enhanced computed tomography and magnetic resonance imaging revealed a >15-cm mass of multiple cystic lesions in the greater omentum. Histopathological findings after surgery showed a sheet-like growth of stellate tumor cells from epithelial cells, cystic degeneration, and mucus-like stroma. Immunohistochemistry was positive for discovered on GIST-1 (DOG1) but negative for CD117 (c-kit).

Published in Radiology Case Reports

ISSN: 1930-0433 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Medicine: Medicine (General): Medical physics. Medical radiology. Nuclear medicine
Website: https://www.sciencedirect.com/journal/radiology-case-reports

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Abstract

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