A Case of Mediastinal Neurofibroma of the Vagus Nerve Mimicking Mediastinal Lymph Node

DEGUCHI Hiroyuki, TOMOYASU Makoto, SHIGEEDA Wataru, KANEKO Yuka, MUE Yoshiharu, TANITA Tatsuo

doi:10.3919/jjsa.76.1847

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Other Title

縦隔リンパ節と鑑別を要した迷走神経由来神経線維腫の1例
症例縦隔リンパ節と鑑別を要した迷走神経由来神経線維腫の1例
ショウレイジュウカクリンパセツトカンベツオヨウシタメイソウシンケイユライシンケイセンイシュノ 1レイ

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A 76-year-old man was referred to our hospital because of an abnormal shadow on a chest X-ray film at a medical checkup. Chest CT scan showed a mass 45 mm in diameter in the right upper lobe of the lung, PET-CT showed a maximum SUV of 13.5 in the same area and we suspected primary lung cancer. Mediastinal lymph node was not diagnosed as metastasis because the diameter was less than 1cm in shorter axis on CT and fluorodeoxyglucose (FDG) uptake was low on PET. We performed lobectomy of the right upper lobe and the intraoperative frozen section histopathological diagnosis was reported to be carcinoma. We shifted to lymph node dissection and found a white tumor which occupied the superior mediastinum and originated from the vagus nerve. We resected the mediastinal tumor. The pathological diagnosis of the lung tumor was pleomorphic carcinoma and that of the nourogenic tumor was neurofibroma. He had café au lait spots and had undergone the resection of a neurofibroma in the leg. He was diagnosed with neurofibromatosis type 1.

Journal

Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association)

Nihon Rinsho Geka Gakkai Zasshi (Journal of Japan Surgical Association) 76 (8), 1847-1851, 2015

Japan Surgical Association

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