[A resected case of teratoma of the lung].

Teratoma of the lung in a 32-year-old female is reported. Abnormal shadow on chest X-ray film was noted at the age of 15 years. Her symptoms were subclinical fever, couch, hemosputum and frequent respiratory infections. Chest X-ray film and CT scan revealed a cyst with an intracystic solid mass in the left upper lung. Bronchogram demonstrated communication of the cyst with B5a and B5b bronchi. The left upper lobe was resected. Microscopic examination of the resected specimen revealed a mature teratoma of the lung. Teratoma of the lung is very rare. This case was diagnosed at surgery and was confirmed by microscopic examination.