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Exploring the length of the common channel of pancreaticobiliary maljunction on magnetic resonance cholangiopancreatography
Author(s) -
Itokawa Fumihide,
Kamisawa Terumi,
Nakano Toshiaki,
Itoi Takao,
Hamada Yoshinori,
Ando Hisami,
Fujii Hideki,
Koshinaga Tsugumichi,
Yoshida Hitoshi,
Tamoto Eiji,
Noda Takuo,
Kimura Yasutoshi,
Maguchi Hiroyuki,
Urushihara Naoto,
Horaguchi Jun,
Morotomi Yoshiki,
Sato Masahito,
Hanada Keiji,
Tanaka Masao,
Takahashi Astushi,
Yamaguchi Taketo,
Arai Yuuki,
Horiguchi Akihiko,
Igarashi Yoshinori,
Inui Kazuo
Publication year - 2015
Publication title -
journal of hepato‐biliary‐pancreatic sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.63
H-Index - 60
eISSN - 1868-6982
pISSN - 1868-6974
DOI - 10.1002/jhbp.168
Subject(s) - magnetic resonance cholangiopancreatography , medicine , magnetic resonance imaging , cholangiography , radiology , common bile duct , endoscopic retrograde cholangiopancreatography , pancreatitis
Background In the revised diagnostic criteria for pancreaticobiliary maljunction ( PBM ), PBM can be diagnosed from a long common channel by magnetic resonance cholangiopancreatography ( MRCP ). However, it is necessary to differentiate from high confluence of pancreaticobiliary ducts ( HCPBD ) with a relatively long common channel (≥6 mm) and effect of the sphincter in the pancreaticobiliary junction. This multicenter study aimed to explore definite value of the length of an abnormally long common channel, which enables to distinguish PBM from HCPBD on MRCP . Methods In 184 PBM patients and 22 HCPBD patients who were diagnosed by direct cholangiography and underwent MRCP , the length of the common channel was measured. Results The length of the common channel was 16.2 ± 6.9 mm on direct cholangiography and 13.9 ± 6.2 mm on MRCP in PBM patients, and 7.7 ± 1.5 mm and 6.6 ± 1.4 mm in HCPBD patients. The optimal cut off value of the length of the common channel to distinguish PBM from HCPBD was identified to be 9 mm. Conclusions Pancreaticobiliary maljunction can be diagnosed from an abnormally long common channel on MRCP , but in cases of the common channel ≤9 mm on MRCP , direct cholangiography is needed to confirm PBM .