Gallbladder carcinosarcoma with a poor prognosis: A case report

Figure 4 Pathological features of carcinosarcoma of gallbladder. A: High power view of the gallbladder wall show intramucosal adenocarcinoma [hematoxylin and eosin (H&E) stain, 40 ×]; B: High power view show high-grade spindle cell sarcoma (H&E, 40 ×); C: Cytokeratin (CK) (HIC, 40 ×) staining show strong membranous positivity in the intramucosal adenocarcinoma; D: CK-19 (HIC, 10 ×) staining show strong membranous positivity in the intramucosal adenocarcimoma; E: Transducin-like enhancer protein 1 (HIC, 40 ×) staining show strong sarcomatous component positivity in the gallbladder neoplasm; F: Special AT-rich sequence-binding protein 2 (HIC, 40 ×) staining show osteoblastic component positivity in the gallbladder neoplasm.