title: Thymoma Metastasis to the Semimembranosus Muscle.
abstract: Thymoma is the most common thymic epithelial tumor whose classification was first introduced in 1999. Type B2 thymoma is considered a moderate/high-risk tumor; however, extrathoracic metastases are extremely rare with limited reports to date. In this report, we present a rare thymoma metastasis to the semimembranosus muscle, which was resected with a wide margin after confirmation by open biopsy. At the final follow-up after 1 year, no local recurrence has been observed.
authors.affiliation: Department of Orthopaedic Surgery, National Defense Medical College, Tokorozawa, Japan.
authors.forename: Kenta
authors.initials: K
authors.lastname: Taniguchi
authors.affiliation: Department of Orthopaedic Surgery, National Defense Medical College, Tokorozawa, Japan.
authors.forename: Michiro
authors.initials: M
authors.lastname: Susa
authors.affiliation: Department of Laboratory Medicine, National Defense Medical College, Tokorozawa, Japan.
authors.forename: Sho
authors.initials: S
authors.lastname: Ogata
authors.affiliation: Department of Thoracic Surgery, National Defense Medical College, Tokorozawa, Japan.
authors.forename: Yuichi
authors.initials: Y
authors.lastname: Ozeki
authors.affiliation: Department of Orthopaedic Surgery, National Defense Medical College, Tokorozawa, Japan.
authors.forename: Kazuhiro
authors.initials: K
authors.lastname: Chiba
keywords: Extrathoracic metastasis; Semimembranosus muscle; Thymoma