巨大な小児縦隔脂肪腫の 1 例 : 特に術前診断と CT について

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An asymptomatic 6-year-old boy was admitted to our university hospital with abnormal findings on chest rentgenogram. His past history was noncontributory. There were no abnormal findings on physical and laboratory examinations. Radiographic studies of the chest on admission demonstrated a large mass with a sharply defined lateral margin occuping the lower left hemithorax. The mass extended from the anterior to the middle mediastinum. The computed tomography confirmed the presence of an left anterior mediastinal mass with CT numbers of -81 units. The posibility of lipoma had been investigated preoperatively. Thoracotomy was performed through the left fifth costal bed exposing a fatty tumor located in the left anterior mediastinum. The mass was easily removed as it was adherent to vital structures and was freely dissectable after the mediastinal pleura was opened. The resected tumor weighed 410 grams and measured 16 by 10 by 6.5 cm. It was consisted of the adult adipose tissues and showed no evidence of malignancy. The patient was discharged on the fourteenth day after operation without any significant complication. The mediastinal lipoma is a rare tumor. To our knowledge, 25 cases of mediastinal lipoma in infancy and childen have been reported in Japanese and English literature. In previously reported cases, only few were diagnosed preoperatively. In our case, the computed tomography examination of the mediastinum was the most valuable in providing the preoperative diagnosis.
日本小児外科学会の論文

巨大な小児縦隔脂肪腫の 1 例 : 特に術前診断と CT について

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