Pulmonary hamartoma: Report of two cases.

Abstract

We recently encountered two cases of pulmonary hamartoma. One (Case 1) was an endobronchial, and the other (Case 2) was an intrapulmonary hamartoma. Case 1 involved a 50-year-old man who had experienced recurrent bloody sputa. The sagittal tomographic study showed a round mass in the right upper bronchus. Under fiberoptic bronchoscopy, a smooth orange-colored and relatively fragile tumor was found. A right upper lobectomy was performed and the tumor was diagnosed histopathologically as an endobronchial hamartoma. Case 2 involved a 44-year-old man who had a coin lesion in his mid-left lung. A segmentectomy of the left S5 was performed. The histopathological diagnosis of this case was intrapulmonary hamartoma. Endobronchial hamartoma is fairly rare and this case is thought to be the eighth reported case in Japan.