2011 Volume 25 Issue 4 Pages 447-450
We encountered a rare case of a bronchogenic cyst that contained small stones. A 75-year-old man was found to have a mediastinal tumor on a visit to a private clinic 5 years previously. He was referred to our hospital for the evaluation of this tumor. Chest computed tomography revealed a well-defined tumor of 8 cm in diameter in the posterior portion of the mediastinum. The tumor exhibited a high intensity on T2-weighted MRI, suggesting a cystic lesion. Although we tried to completely remove the cyst through a right thoracotomy, we could not remove it completely due to adhesion to the left atrium, and so we opened the cyst during surgery, and detected 75 small stones within it. The remnant area of the cyst wall was ablated with an argon laser coagulator. Component analysis of the stones showed calcium oxalate. Pathological examination of the resected cyst led to the diagnosis of a bronchogenic cyst.
