1998 Volume 12 Issue 5 Pages 613-617
A 74-year-old woman was admitted to our hospital because of a giant mediastinal mass shadow at the right pulmonary hilum on chest X-ray films. A chest CT scan showed a mediastinal cystic mass with rim calcification. Thoracotomy and cystectomy was performed under the diagnosis of a bronchogenic cyst. Partial resection of SVC was necessary because of tight adhesion to the mass. Pathologic examination revealed a large cyst without epithelial cells on the inner surface and with calcification and inflammatory change in the cyst wall. Rim calcification was considered to be due to chronic inflammation, and careful treatment is necessary at the operation of calcified mediastinal cyst.
