title: Hypofractionated stereotactic radiotherapy for dumbbell-shaped hypoglossal schwannomas: Two cases of long-term follow-up and a review of the literature.
abstract: Cases of hypoglossal schwannoma are extremely rare. Historically, microsurgical resection has been the standard treatment, but it may not always be feasible; thus, it is crucial to investigate alternative treatments. We herein present the cases of two patients, both of whom presented with tongue deviation and hemiatrophy, accompanied by headaches. Magnetic resonance imaging revealed a dumbbell-shaped tumor originating from the hypoglossal nerve that was adjacent to the cranial base in each patient. Hypofractionated stereotactic radiotherapy was used to treat the tumors, with a total dose of 30 Gy in 3-Gy fractions delivered to the planning target volume. Several months later, the tumors had significantly decreased in size and the symptoms of the two patients had gradually improved.
authors.affiliation: Center of Radiation Oncology, Wujing Hospital, Shanghai 201103, P.R. China.
authors.forename: Yong
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Internal Medicine, Jiading Central Hospital, Shanghai 201800, P.R. China.
authors.forename: Jinrong
authors.initials: J
authors.lastname: Lou
authors.affiliation: Center of Radiation Oncology, Wujing Hospital, Shanghai 201103, P.R. China.
authors.forename: Shujun
authors.initials: S
authors.lastname: Qiu
authors.affiliation: Center of Radiation Oncology, Wujing Hospital, Shanghai 201103, P.R. China.
authors.forename: Yutian
authors.initials: Y
authors.lastname: Guo
authors.affiliation: Center of Radiation Oncology, Wujing Hospital, Shanghai 201103, P.R. China.
authors.forename: Mianshun
authors.initials: M
authors.lastname: Pan
keywords: hypoglossal Schwannoma; stereotactic radiotherapy