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(a) Computerized Tomography section showing enlarged perigastric lymph nodes. (b) PET scan showing intense uptake in primary gastric lesion.
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Contrast enhanced computed tomography (CT) scan of the chest, abdomen, and pelvis demonstrated an exophytic gastric body mass with adjacent mild mesenteric adenopathy, sub- and retro pyloric and gastroduodenal distributions (Fig. 1a). No definitive abnormal FDG uptake within adjacent mesenteric adenopathy (Fig. 1b).
Gross appearance of the schwannoma on cut section.
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Cut surface exhibited a white-tan appearance (Fig. 2).
H&E appearance of the tumor. Photomicrographs of the microscopic appearance of the tumors were taken at 100X magnification.
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Histopathological and immunohistochemical features were consistent with the presence of a gastric schwannoma with reactive lymphadenopathy (Fig. 3).
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Computerized tomography image showing enlarged perigastric lymph node (a) and primary tumor (b).
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Several perigastric lymph nodes were noted measuring up to 1.1 cm (Fig. 4a and b).
Tumor positively staining for S100.
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Microscopic and immunohistochemical features coincided with results of core biopsy (Fig. 5).