Clin Endosc.  2020 May;53(3):377-378. 10.5946/ce.2020.134.

A Rare Cause of Gastric Subepithelial Tumor

• Kim GH
• Park DY

• KMID: 2502776
• DOI: http://doi.org/10.5946/ce.2020.134

Figure

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  Fig. 1. (A) Initial endoscopy reveals a small subepithelial tumor at the gastric lower body. (B) On follow-up endoscopy 6 months later, the tumor has increased in size, but no erosion or ulceration is noted. (C) On endoscopic ultrasonography, the tumor is a 1.5 cm-sized, heterogeneously hypoechoic lesion in the deep mucosal and submucosal layers. (D) The resected specimen after endoscopic submucosal dissection.

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  Fig. 2. (A) Histopathological examination reveals spindle tumor cells under myxoid stroma with lymphoplasmacytic infiltration among the tumor cells (hematoxylin and eosin, ×400). (B) The spindle cells are immunopositive for smooth muscle actin and vimentin, and immunonegative for chromogranin, S-100, C-kit, DOG1, and anaplastic lymphoma kinase (smooth muscle actin, ×200).

Reference

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3. Park SG, Kim GH, Park HJ, Kahng DH, Lee BE, Park DY. [Case of an inflammatory myofibroblastic tumor of the duodenum]. Korean J Gastroenterol. 2018; 72:28–32.