Related Experiment Video
Updated: May 13, 2026

Non-Intubated Video-Assisted Thoracoscopic Surgery
Published on: May 26, 2023
Video-assisted thoracoscopic surgery for ectopic middle mediastinal thymoma in a patient with myasthenia gravis
Satoshi Koezuka1, Fumitomo Sato, Yoshinobu Hata
1Department of Chest Surgery and Surgical Pathology, Toho University Omori Medical Center, Tokyo, Japan.
Abstract:
We present a rare case of middle mediastinal thymoma with myasthenia gravis. A 51-year-old man presented with right ptosis and muscle weakness, and received a diagnosis of generalized myasthenia gravis. Computed tomography of the chest showed a 20-mm nodule in the middle mediastinum, suggesting a possible ectopic thymoma. He underwent video-assisted thoracoscopic extended thymectomy and resection of the tumor. Histologic examination revealed an ectopic thymoma and ectopic thymic tissue around the tumor. One year after the operation, his condition remains well controlled solely with tacrolimus. Careful preoperative radiologic examination concerning possible ectopic thymoma outside the dissection area of the extended thymectomy is recommended.
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