Choledochocele demonstrated on conventional sonography

Abstract

Choledochocele is the least common form of choledochal cyst. We report a rare bile duct cyst diagnosed in a 63-year-old woman via CT cholangiography. Although conventional sonography initially failed to reveal abnormal findings, a subsequent detailed study clearly depicted the lesion. To the best of our knowledge, this is the first report of choledochocele unambiguously demonstrated on transabdominal sonography.

Sonographic diagnosis of choledochocele

“…However, the demonstration of the choledochocele solely with conventional abdominal US may be more difficult than other types of choledochal cysts; the diagnostic accuracy with conventional US may be as low as 31% 13. In a case report, Kishino et al reported unambiguous demonstration of a choledochocele after a failed conventional US examination due to obscuration of the distal part of the choledochus 14. In fact, obstructive lesions in the common bile duct may be very difficult to detect and necessitate a very careful ultrasound examination.…”