抄録
Leiomyoma of the lung is benign in nature and is one of the rarest tumors of meso-dermal origin. A search of the literature in Europe and America revealed only twenty one cases of this benign tumors. Also in Japan only seven cases of leiomyoma of the lung have been reported.
In this report two cases of leiomyoma of the lung are presented.
Case 1
The 31-years-old motorman was admitted to the 2nd Tokyo National Hospital on Sep-tember, 1968. His chief complaints were cough and dyspnoea. The latter seemed rather typical of asthma.
The history revealed that he had been suffering twice a year in spring and winter, from pneumonia like symptoms following common cold seven years prior to the admission. Physical examination revealed dry sibilant rales were heard on both lung fields. Chest film showed consolidation of the bronchopneumonic process in the left lung field. Bronchogram revealed obstructing the bronchial lumen of the left upper lobe. Bronchoscopy revealed a yellowish gray, smooth tumor 4 cm distal to the left main bronchial tree. On December, 1968, he was underwent to the left thoracotomy, and left pneumonectomy was performed. Intrabronchial tumor was measured as 2.5 ×1.5 ×1.4 cm. Microscopically the tumor was typical leiomyoma. On April, 1969, he was discharged in best conditions.
Case 2
A 35-years-old woman was admitted in the 2nd Tokyo National Hospital on January, 1964. She was discovered an isolated, small egg sized nodule in the left lung field in routine chest x-ray a year prior to the admission.
She had been completely asymptomatic. On February, 1964, under suggestion of benign tumor of the lung, she was underwent to the left thoracotomy, and lobectomy of left upper lobe was performed. The oval tumor was measured as 4×3×2 cm. On cut section, it was of gray white color. Microscopic examination revealed that the tumor was characterized by whorls of interlacing bundles of spindle like cells. On May, 1964, she was discharged and now getting along well.
