A Case of the Esophageal Schwannoma

Chikashi Hiranuma, Kenji Omura, Kazuyuki Kawakami, Shouichi Tsukayama, Hidemaro Yoshiba and Go Watanabe

Department of General and Cardiothorasic Surgery, Kanazawa University School of Medicine

We report an extremely rare case of an esophageal schwannoma. A 64-year-old woman was admitted to hospital after a mediastinal tumor was found on a chest X-ray taken at another hospital. A chest CT, chest MRI and endoscopic ultrasonography showed a solid tumor in the esophagus, the patient was diagnosed as having an esophageal leiomyoma. Thoracoscopic enucleation was performed. The tumor was 3.5×3.0×2.0 cm in size and had a grayish white capsule. Histopathologically, the tumor was composed of spindle cell bundles and showed a palisade arrangement of the nucleus. Immunohistochemical examinations were negative for α-smooth muscle actin and positive for S-100 protein. Thus, the tumor was diagnosed as an esophageal schwannoma.

Key words
esophageal schwannoma, esophageal submucosal tumor

Reprint requests
Chikashi Hiranuma The Department of Surgery, Kanazawa Municipal Hospital 3-7-3 Heiwamachi, Kanazawa City, 921-8105 JAPAN

Accepted
May 27, 2003

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