Fig. 3From: Bowel obstruction caused by colonic metastasis of lung adenocarcinoma: a case report and literature reviewThe pathology specimen demonstrated metastatic lung adenocarcinoma of the colon. (H&E stain, × 40). The carcinoma cells were positive for CK7, TTF-1, and Napsin-A, but negative CK20 and CDX2 (× 40)Back to article page