Abstract

• Pulmonary chondromatous hamartoma is a very rare disease in pulmonary tumors but it's character is benign nature. It is often incidental, asymptomatic finding on routine chest roentgenogram. They are reported to account for 8 percent of all coin lesions. In 1904, Albrecht first used the term "Hamartoma" to refer to a cogenital abnormal mixing of the normal components of an organs other than the lung. The author experienced one case of endobronchial hamartoma. The patient, 41-year-old-female was admitted to our hospital due to chest tightness and general weakness. Chest roentgenogram reveals that walnut-size radio-opaque density is seen in right upper lung field with demarcated margin. Right pneumonectomy is performed and the answer of pathology is benignendotrachial hamartoma. The post-operative course is unevenful and she was discharged in good condition.