PMC5505906_01
Computed tomography scan at the level of the intussusception. The gastric tumor invaginated into the duodenum with extravasation of contrast medium.
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Abdominal computed tomography (CT) revealed intussusception of the gastric submucosal tumor into the duodenum with no distant metastasis (Fig. 1).
Endoscopic image showing invagination of the gastric body into the duodenum. The distal stomach appeared folded.
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An emergency endoscopic examination revealed invagination of the gastric body into the duodenum (Fig. 2).
A: Endoscopic image showing a submucosal tumor with an ulcerated surface and active bleeding on the posterior wall of the gastric body. B: Retrograde distant view after endoscopic hemostasis.
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Bleeding from the ulceration of the tumor was also observed (Fig. 3).
Endoscopic ultrasound scan showing a hypoechoic lesion with hyperechoic foci limited to the third (submucosal) layer.
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Endoscopic ultrasonography (EUS) revealed a hypoechoic lesion with hyperechoic foci limited to the third (submucosal) layer (Fig. 4).
Pathological analysis of the gastric mass confirmed a gastric gastrointestinal stromal tumor via positive immunohistochemical staining for c-kit and CD34. A: Macroscopic findings of the segmented tumor. B: Sheet formatted spindle cell spread in submucosal layer. C: The tumor showed the typical features of a spindle cell tumor with long, oval nuclei. D: C-kit protein immunostaining demonstrated strong cytoplasmic immunoreactivity.
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The tumor was histologically diagnosed as a low-grade GIST (Fig. 5).