Intraductal US aids detection of carcinoma in situ in a patient with a choledochal cyst.

@article{Yazumi2001IntraductalUA,
  title={Intraductal US aids detection of carcinoma in situ in a patient with a choledochal cyst.},
  author={Shujiro Yazumi and Ryo Takahashi and Masahide Tojo and Norihiko Watanabe and Mahiro Imamura and Tsutomu Chiba},
  journal={Gastrointestinal endoscopy},
  year={2001},
  volume={53 2},
  pages={233-6}
}