大動脈肺動脈窓に発生した中縦隔脂肪腫の１例

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  • A case of middle mediastinal lipoma originating from the A-P window.

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We experienced a case of middle mediastinal lipoma originating from the aortic-pulmonary artery window (A-P window). A 64-year-old woman was admitted because of an abnormal shadow on chest X-ray, which was pointed out at a medical checkup.rCT scan showed a low density tumor with a little heterogeneous area at the A-P window. As the CT number of the tumor was about -50, it was diagnosed as a lipoma. Complete tumor extirpation was performed uneventfully. The tumor which measured 6×5.8×3.5cm in size, arose from the A-P window and was compressed by both the vagal nerve and recurrent nerve. The pathological diagnosis of the tumor was benign mature lipoma. This is the first report of a mediastinal lipoma arising from the A-P window in the Japanese literature as far as we have reviewed.

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