biliary tract的用法和樣例：
例句
- Such masses may also focally obstruct the biliary tract and lead to an elevated alkaline phosphatase.
腫物也可阻塞膽管，導致鹼性磷酸酶升高。 - Despite recent advances in diagnosis and treatment, the prognosis of patients with biliary tract cancer is still poor.
儘管近年來在癌症診斷和治療方面取得了重要進展，但膽管癌的診斷卻依然困難。
