Subcarinal Giant Bronchogenic Cyst

Bronchogenic cysts (BC) are rare congenital malformations arising during the development of the ventral foregut. Bronchogenic cysts form as a result of abnormal budding of the bronchial tree during embryogenesis (between 4th-6th weeks). Most bronchogenic cysts originate in the mediastinum, while 15% to 20% occur in the lung parenchyma. According to the literature, most intrapulmonary cysts occur in the lower lobes. But bronchogenic cysts are commonly found in the middle and superior mediastinum. The bronchogenic cyst in our patient was subcarinal. It was striking in terms of its giant size and laying on two hemithoraxes.The bronchogenic cysts are usually asymptomatic and often diagnosed incidentally during routine chest roentgenogram for other reasons.They may not be detected until adulthood. Our patient was 56 years old. She had no obvious symptoms . The patient was referred to our clinic because of cough,and her bronchogenic cyst was determined. Basic treatment of bronchogenic cyst consists of surgical excision. However, in cases where resection cannot be performed, the epithelium should be peeled as in our case.