Abstract
Benign mediastinal tumor is usually resected with thoracotomy or VATS by an intercostal approach. We resected a thymic cyst by a subxiphoid approach with a flexible thoracoscope. An 80-year-old man was referred to our department for evaluation of dry cough. Chest CT and MRI revealed a rounded cystic mass 44×42×38mm in diameter with a clear margin, located at the left side of the anterior mediastinum . It was removed successfully by thoracoscpic technique through the subxiphoid approach with sternum lifting . Histopathologic examination revealed the diagnosis of a thymic cyst . We conclude that this approach is effective for the resection of benign tumors located at the anterior mediastinum.