Extralobar pulmonary sequestration of the superior mediastinum

Abstract

A 30-year-old man was admitted for examination of a mediastinal mass identified on a chest radiograph. He had no complaint related to intrathoracic lesions and no disease history of note. A chest computed tomographic scan revealed a mass with cystic and solid components on the right side of the superior mediastinum. Since malignancy could not be ruled out, surgery was performed. The mass contained glandular cavities covered with ciliated columnar epithelium, cartilage, and bronchial glands. Additionally, it showed an abnormal blood vessel, and he was diagnosed with extralobar pulmonary sequestration.