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Updated: Mar 17, 2026
Intraoperative Ultrasound in Spinal Surgery
Published on: August 17, 2022
Intraosseous Schwannoma of Rib With Severe Back Pain and Characteristic Pathological Findings
Takahide Yao1, Hajime Otsuka1, Satoshi Koezuka1
1Division of Chest Surgery, Toho University School of Medicine, Tokyo, Japan.
Abstract:
A 44-year-old man was admitted to our hospital with severe back pain continuing for 12 years. Computed tomography of the chest revealed a 14 mm diameter tumor with calcification located in the right seventh rib. We performed right seventh rib and sixth to seventh intercostal muscle partial resection. Microscopically, the tumor showed typical features of a schwannoma composed of Antoni A and Antoni B tissues. The tumor had positive immunohistochemical staining for S-100 protein. The pathological diagnosis was intraosseous schwannoma. The patient's severe back pain disappeared and there was no recurrence or metastasis of the tumor during a 1-year follow up.
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