Schwannoma originating from the superior mediastinal phrenic nerve: a case report

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  • 横隔神経を温存し得た上縦隔横隔神経鞘腫の1切除例

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Abstract

A 54-year-old female was referred to our hospital due to an abnormal chest CT shadow. Her chest CT showed a 4 cm diameter mass in the anterior mediastinum. Preoperative diagnosis was a benign mediastinal tumor (neurogenic suspected). Surgery confirmed that the tumor originated from the right phrenic nerve. The tumor was removed without resecting the phrenic nerve. Histopathological findings showed a schwannoma originating from the right phrenic nerve. Postoperatively, the right diaphragm was not elevated. Such tumors are rare, and only 19 cases have been reported in Japan.

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