Abstract
A 49-year-old male was admitted to a hospital with recurrent fever and back pain when he was 28 years old. Chest computed tomography (CT) revealed a cystic lesion in the upper mediastinum. However, he was discharged without surgery because the cystic lesion reduced in size within a short period. Subsequently, routine screening chest radiograph films demonstrated an abnormal shadow and he often experienced fever of unknown origin with back pain, but did not consult a hospital for a long time. More than 20 years later, he consulted our hospital with the same symptoms. CT revealed a round mass measuring 7 cm in the upper mediastinum. Resection of the cyst with the adhered S1+2 of the lung was performed as a diagnostic and therapeutic measure. Histopathological examination showed a bronchogenic cyst. Because complications such as infection and stricture of the bronchus have been reported, surgical resection may be recommendable for all symptomatic bronchogenic cysts.
