Diagnosis of congenital bronchobiliary fistula in children by bilirubin
crystallization in the bronchoalveolar lavage fluid: A case report and
literature review
Abstract
Background: Congenital bronchobiliary fistula (CBBF) is a rare
disease with abnormal connection between the biliary tract and the
bronchus. The misdiagnosis rate of CBBF is high, delayed surgery may
induce poor outcome. Case presentation: We reported a girl with
CBBF who was confirmed via bronchoscopy and chest computed tomography
(CT). The girl was 7-month-old admitted to the hospital with “recurrent
pneumonia”. Bilirubin crystallization detection was positive in the
bronchoalveolar lavage fluid (BALF). CT images showed the abnormal
traffic between the biliary tract and the right main bronchus, the girl
was diagnosed with CBBF and recovered after surgical operation.
Literature search: A total of 27 cases were collected, 14
(51.8%) cases were diagnosed in the neonatal period, 9 (33.3%)
patients were diagnosed in infancy. CBBF was more common in female
(19/27, 70.3%). The specific manifestations were bilious sputum (24/27,
88.9%) and bilious vomiting (7/27, 22.2%). Recurrent pneumonia (9/27,
33.3%) was common clinical manifestations. The most abnormal fistula
originates different location around the carina was right main bronchus
(21/27, 77.8%). There were 23(85.2%) cases recovered after surgical
operation and 4(14.8%) cases with severe comorbidities/complications
died. Conclusions: CBBF should be suspected in infants with
bilious sputum. Bronchoscopy plays crucial role in preoperative
evaluation and postoperative follow-up. With early diagnosis and
surgery, the prognosis is quite well for CBBF patients without severe
biliary malformation and/or severe postoperative complications.