Figure 4From: Synchronous double primary squamous cell carcinoma and adenocarcinoma of the extrahepatic bile duct: a case reportHistopathologic findings. Adenocarcinoma of common bile duct (bottom) adjacent to reactive ductular proliferation (top) (A), which infiltrated into fibromuscular layer with multiple tumor emboli (B). Separate lesion showing well-differentiated squamous cell carcinoma. The tumor was observed adjacent to dilated bile ducts (C) and surface epithelium (D).Back to article page