胸腔鏡下に摘出した胸腔内結石の１例

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  • A Case of Thoracoscopically Removed Intrathoracic Stone.

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A 67-year-old man was admitted to the hospital for treatment because he was pointed out a tumorous shadow in the left lung on a chest x-ray film at a medical checkup. On a chest CT scan, a left lung tumor was suspected. Since a bronchoscopic study failed to make the definite diagnosis, a thoracoscopy-aided pulmonary biopsy was made. Exploration of the thoracic cavity showed no lesion in the lung, but a tumorous suspending material was seen on prepericardiac fatty tissue and then it was removed. The removed tumor was white in color, 1.7×1.5×1.0cm in diameter, and elastic hard. Histopathologically, the tumor was mainly composed of fatty tissue with a part presenting necrotic change, of which surface was covered with lamellar hyalinized connective tissue. Consequently, the tumor was diagnosed as intrathoracic stone.<br> This disease is so rare that only five cases have been reported in Japan. This rare case is presented here, together with some bibliographical comments.

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