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傍神経節腫はカテコラミン産生クロム親和性細胞から発生する腫瘍であり,副腎髄質に発生するものが褐色細胞腫,副腎外に発生するものが傍神経節腫とされているが1),後縦隔発生の傍神経節腫はまれである.われわれは左後縦隔に発生した傍神経節腫の症例を経験したので,文献的考察を含めて報告する.
A 69-year-old man with hypertension was referred for an abnormal shadow detected on chest computed tomography (CT) at a medical checkup. Enhanced CT showed a highly enhanced posterior mediastinal tumor of 34×27 mm. Magnetic resonance imaging (MRI) revealed a low signal intensity on T1-weighted images and high signal intensity on T2-weighted images. Thus, a neurogenic tumor was suspected and the surgery was performed. The tumor was carefully dissected as it was hyper-vascular and hemorrhagic. Immediately after tumor resection, the patient’s blood pressure rapidly decreased, and phenylephrine hydrochloride was needed to maintain the blood pressure. The pathological diagnosis was paraganglioma.
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