2018 Volume 32 Issue 5 Pages 610-616
A 78-year-old man was admitted to our hospital with an abnormal shadow observed on a chest radiograph. The abnormal shadow was followed-up as an anterior mediastinal nodule, which increased in size over 3 years. Chest computed tomography and magnetic resonance imaging revealed an anterior mediastinal cystic lesion measuring 39 mm in diameter. Based on his clinical course and imaging findings, we performed video-assisted thoracoscopic resection of the lesion. Histopathologically, the lesion showed multiple cysts, and immunohistochemical analysis showed that the cells lining the cyst walls were stained positive for D2-40. Based on these findings, the lesion was diagnosed as a cystic lymphangioma. The patient's postoperative course was uneventful without any recurrence noted a year postoperatively.
