PMC6547282_01
a Computed tomography scans showing an irregularly enhanced mass, 5 cm in diameter, in the ileocecal region (left, arrow) and a ring enhanced mass, 6.5 cm in diameter, in segment 8 of the liver (right, arrow). b Colonoscopy showed a 4-cm lesion suspected of being a submucosal tumor in the ileocecal region.
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F1
A computed tomography scan revealed a tumor 5 cm in size with irregular enhancement in the ileocecal region and a tumor 6.5 x 4 cm in size with ring enhancement in segment 8 of the liver (Fig. 1a). Colonoscopy revealed a 4-cm lesion suspected of being a submucosal tumor in the ileocecal region (Fig. 1b).
a The tumor was present on the abdominal wall and pressed the cecum. b The tumor measured 5.5 x 4.0 x 3.8 cm. c Histological examination showed diffuse growth of large spindle cells. HE. x200. d Immunohistochemically, the tumor reacted positively to both cytokeratin (CK7) and vimentin, but did not react to DOG1, S100, or antibodies (CD45LCA), suggesting a lymphoma.
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F2
Intraoperative examination revealed that the tumor was present on the abdominal wall and pressed the cecum, but there was no invasion (Fig. 2a). The tumor measured 55 x 40 x 38 mm (Fig. 2b). Histological examination showed diffuse growth of large spindle cells (Fig. 2c). Immunohistochemically, the tumor reacted positively to both cytokeratin and vimentin, but did not react to DOG1, S100, or antibodies, suggesting a lymphoma (Fig. 2d).
a The tumor measured 7 x 6 x 5 cm. b The tumor was composed of both adenocarcinoma and sarcomatous components. A ductogenic image was observed in the tumor. HE. x200. c On immunohistochemical staining, the tumor reacted positively to cytokeratin-7 (CK7), EMA, and HHF35, but negatively to hepatocytes and c-Kit.
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F3
Macroscopically, the tumor specimen measured 7 x 6 x 5 cm (Fig. 3a), and the tumor invaded the diaphragm and lung. Vascular invasion was not observed (Fig. 3b). Upon immunohistochemical staining, the tumor reacted positively to cytokeratin-7, EMA, and HHF35, but negatively to hepatocytes and c-Kit (Fig. 3c).