Squamous cell carcinoma of the gallbladder.

Gallbladder cancer is the most common malignant tumor of the biliary tract. The majority of cases are adenocarcinoma (AC). Pure squamous cell carcinoma (SCC) of gallbladder accounts only 3% of the malignant neoplasm of this organ. Many patients are at advanced stage when diagnosed and have bad therapeutic efficacy. At present, radical surgery is the only chance to gain long-term survival for patients with early-stage gallbladder cancers. Recent reports have shown a benefit of adjuvant chemoradiation in this type of tumor. At present, no therapy is defined for unresectable cancer of the gallbladder, especially for SCC.