대한흉부영상의학회 Weekly Chest Cases

Courtesy of Tae Jung Kim, MD. / Seoul National University Bundang Hospital, Korea.
Age/Sex 66 / F
Chief ComplaintIncidental abnormal finding on chest radiograph

Diagnosis: Bronchogenic Cyst
Radiologic Findings: Chest radiograph shows a widening of carinal angle. CT shows a well-demarcated cystic mass at subcarinal area. The lesion shows homogeneous internal content and uniform wall thickness. Wall calcification is also seen on precontrast image.
Brief Review: Bronchogenic cysts are sharply marginated masses demonstrating water or soft tissue density. Differences in attenuation result from the amount of proteinaceous fluid within the cysts. Cysts do not enhance after administration of IV contrast. A recent article from the Armed Forces Institute of Pathology documented the appearance of 62 cysts: 40% were water density, 40% were soft tissue density, 5% contained milk of calcium, 10% were indeterminate from streak artifact, and the remainder were intrapulmonary, either completely air filled or containing an air-fluid level (McAdams et al, 2000). Beside intrapulmonary and the mediastinum, bronchogenic cysts have been reported to be located infradiaphragmatic, cutaneous, intrapericardial and intramural in the esophagus.
References: 1. McAdams HP, Kirejczyk WM, Rosado-de-Christenson ML, et al. Bronchogenic cyst: imaging features with clinical and histopathologic correlation. Radiology 2000; 217: 441-6

2. Cioffi U, Bonavina L, De Simone M, et al. Presentation and surgical management of bronchogenic and esophageal duplication cysts in adults. Chest 1998; 113:1492-6
Keywords: Mediastinum, Congenital,

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대한흉부영상의학회 Korean Society of Thoracic Radiology