Approximately 15,000 new cases of liver and biliary tract carcinoma are diagnosed annually in the United States, with roughly 10% of these cases being<unk> s. Cholangiocarcinoma accounts for approximately 2% of all cancer diagnoses, with an overall incidence of 1.2/100,000 individuals. Two-thirds of cases occur in patients over the age of 65, with a nearly ten-fold increase in patients over 80 years of age. The incidence is similar in both men and women.
Klatskin tumor
Ganglion cyst
Askin's tumor
Lipoblastoma
Acrospiroma
Nuchal fibroma
Epidermoid cyst
Tarlov cyst