English to Italian Medical Medical (general) chirurgia

Si tratta di un manuale americano di chirurgia, capitolo relativo al sistema biliare.
In particolare nel paragrafo sulla colangite acuta trovo queste frasi:

Although stones are a common cause, ascending cholangitis can be seen with any obstructing phenomenon, including a malignant neoplasm.
The two absolute requirements for the development of acute cholangitis are bacteria in the biliary tree and obstruction of flow, with increased intraluminal pressure. The source of bactibilia in patients with acute cholangitis is unclear because culture of most bile is sterile. With obstruction from a stone, bactibilia can be identified in up to 90% of patients.

Trovo solo 34 (!) riferimenti in italiano per bactibilia, non so come altro tradurre...
Grazie.