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Updated: Jun 10, 2026

Thoracoscopic Extended Right Middle Plus Lower Sleeve Lobectomy for Non-Small-Cell Lung Cancer
Published on: February 27, 2026
Huge mediastinal cystic tumor penetrating the sternum
Tomoko Takagishi1, Toshihiro Osaki, Mantaro Kodate
1Department of Chest Surgery, Iizuka Hospital, 3-83 Yoshio-cho, Iizuka 820-8505, Japan. tomokobe0502@gmail.com
Abstract:
We report a very rare case of a huge anterior mediastinal tumor penetrating the sternum that was diagnosed in a 59-year-old woman. The tumor was completely resected en bloc with the manubrium sterni, and the chest wall defect was closed with a pectoralis major muscle flap. Histologic examination of the cystic mass revealed the diagnosis of a benign mediastinal cystic tumor, most likely a benign cystic mature teratoma.
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