A case of mediastinal schwannoma originating from the intrathoracic vagal nerve.

DOI 7 Citations 16 References

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  • 胸腔内迷走神経由来の縦隔神経鞘腫の１症例

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Abstract

A case of schwannoma originating in the left intrathoracic vagal nerve was reported. The patient presented to our hospital with hoarseness and an abnormal shadow on the chest roentgenogram. Under the diagnosis of benign mediastinal neurogenic tumor, an operation was carried out. The mass was 8×4×2.5 cm in size and originated from the left vagus nerve located proximal to the branch of the recurrence nerve. There was no evidence of invasion of the mass into the surrounding organs and tissues. The histological diagnosis was schwannoma. Subcapsular extirpation was done preserving the nerve fibers. However, postoperative horseness due to dysfunction of the recurrent laryngeal nerve occurred in this case. This is the 8th reported case of subscaplar extirpation for a mediastinal vagal schwannoma located proximal to the branch of the recurrence nerve in the Japanese literature. In 3 of these cases recurrence nerve function was reserved. We considered that subscapular extirpation is an effective procedure to preserve recurrence nerve function.

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