Congenital bronchobiliary fistula: A case report and review of the literature

Figure 5 A microscopic examination performed separately for three parts of the removed fistula. A: The red arrow indicates the lumen that was partly covered by pseudo-ciliated columnar epithelium. The blue arrow indicates the cartilage rings that lay beneath the mucosa; B: The arrow indicates the clusters of bronchial glands at the end of the bronchus; C: The arrow indicates the glandular epithelia of the bile duct and interstitial cholestasis.