PMC3617893_01
High power view of colonic mucosa and submucosa showing an atypical infiltrate of small cells with high nuclear to cytoplasmic ratios within the submucosa. The latter demonstrate the typical 'Indian file' cord-like invasive pattern of metastatic LC.
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F1
Hartmann procedure. Histology from the resected specimen revealed a metastatic LC to the distal bowel wall (fig. 1, fig. 2).