Biliary cystadenoma and cystadenocarcinoma epidemiology and demographics

Biliary cystadenoma is a rare disease. The median age at diagnosis of biliary cystadenoma is 45 years. Females are more commonly affected with biliary cystadenoma than males.

• Biliary cystadenomas constitute less than 5% of cystic lesions of the liver.^[1] Biliary cystadenoma presents as an intrahepatic lesion in 90% of cases, while in the remaining cases it involves the extrahepatic biliary tree.^[2]

• The majority of patients are middle-aged women with an average age of 45 at time of diagnosis.^[3]
• The peak frequency has been reported between the fourth and the sixth decades.^[2]
• However, in a few cases, cystadenomas have been observed in the second decade of life.

• The majority of biliary cystadenomas occur in women (80-85%), and this suggested a role for hormonal influence.^[2]

Template:WikiDoc Sources