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CyberKnife radiosurgery for treatment of residual or recurrent Grade 1 choroid plexus papilloma: A single institution experience.
CyberKnife radiosurgery for treatment of residual or recurrent Grade 1 choroid plexus papilloma: A single institution experience. World neurosurgery Zhang, M., Park, D. J., Marianayagam, N. J., Yener, U., Soltys, S. G., Pollom, E., Chang, S. D., Meola, A. 2023Abstract
Choroid plexus papillomas (CPP) are rare intraventricular brain tumors derived from the epithelium of the choroid plexus. Gross total resection has traditionally been considered curative, but residual tumor or recurrence remains possible. SRS has become particularly more important strategy for subtotally resectied and recurrent tumors. The evidence-based rationale of SRS treatment for residual or recurrent CPP in adult patients is still lacking due to its rarity.We retrospectively reviewed histopathologically confirmed cases of residual or recurrent CPP treated with SRS at our institute in the adult population between 2005 and 2022. Three patients, with five lesions, were identified with a median age of 63 years. Patients presented initially with hydrocephalus-related symptoms, although ventriculomegaly was noted only in one patient radiographically. The tumor locations were most common in 4th ventricle or along foramen of Luschka. Treatment was delivered in a single fraction in 4 lesions and in 3 fractions in 1 patient. The median follow-up was 26 months.The local tumor control rate for the lesions was 80%. One patient developed a new lesion outside the SRS field, and one lesion developed progression without need for subsequent treatment. There were no significant shrinkage of the lesions radiographically. None of the patients revealed radiation-related adverse events. No patients required surgical management after SRS treatment at our institution. Based on the literature review, our case series was the second largest retrospective series from a single institution on SRS for recurrent or residual CPP.SRS for patients with recurrent or residual CPP was a safe and effective treatment modality in this case series. Larger studies are encouraged to validate the role of SRS in the treatment of recurrent or residual CPP.
View details for DOI 10.1016/j.wneu.2023.07.003
View details for PubMedID 37423336