PMC5948315_01
Magnetic resonance enterography demonstrating thickened transverse colon and proximal dilation of the right colon.
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F1
C-reactive protein was elevated at 32.7, and repeat MRE showed a thickened transverse colon without previously noted mesenteric stranding (Figure 1).
(A) Poorly differentiated carcinoma with signet-ring cell features involving the colonic wall, serosal surface, and subserosal adipose tissue, with no evidence of in situ carcinoma. (B) Mucicarmine immunohistochemical stain highlighting infiltrating tumor cells in the colon. (C) Periodic acid-Schiff stain of antral type gastric mucosa highlighting tumor cells of poorly differentiated adenocarcinoma, signet-ring cell type.
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F2
TTF-1, and LCA staining, which suggested metastasis from the upper GI tract (Figure 2). The resected ileum was normal.
Gastric mucosa with linitus plastica appearance on upper endoscopy.
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F3
Upper endoscopy revealed diffusely thickened gastric folds resembling poorly differentiated invasive SRCC, which were negative for Helicobacter pylori (Figure 3).