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pneumobilia; aerobilia
Accumulation of gas in the biliary tree.
Etiology:
- recent biliary instrumentation
- ERCP, cholangiography
- incompetent sphincter of Oddi
- sphincterotomy (~50% pneumobilia at 1 year)
- biliary-enteric surgical anastomosis
- Whipple procedure
- spontaneous biliary-enteric fistula (cholecystoduodenal ~70%)
- gallstone ileus, peptic ulcer, traumat, neoplasm
- infection (rare)
- cholangitis, liver abscess
- biliary-bronchopleural fistula (rare)
Differential diagnosis:
- portal venous gas
General
sign/symptom
References
- Sharma R, Gaillard F
Pneumobilia.
https://radiopaedia.org/articles/pneumobilia
- Wikipedia: Pneumobilia
https://en.wikipedia.org/wiki/Pneumobilia
- Sherman SC, Tran H.
Pneumobilia: benign or life-threatening.
J Emerg Med. 2006 Feb;30(2):147-53.
PMID: 16567248