ABSTRACT
Bile canalicular antibody (BCA) was first reported in 1969. Many studies of BCA were performed in the 1970s and 1980s and revealed that BCA has a highly positive rate in chronic active hepatitis and primary biliary cirrhosis (PBC). These studies suggested that BCA can be useful in the diagnosis of these liver diseases. However, BCA is almost negative in patients with alcoholic hepatitis. We report a case of BCA in a 50-yr-old woman with a history of heavy alcohol consumption. The patient's serum levels of aspartate transaminase and alanine transaminase were increased, leading to a diagnosis of alcoholic hepatitis. The patient was evaluated for liver disease. Anti-mitochondria antibody, anti-smooth muscle antibody, and anti-liver kidney microsomal antibody tests were conducted, yielding negative results. However, during this testing process, the patient's serum was incidentally found to be positive for BCA at a titer of 1:160. This is the first case report of BCA in Korea.