Implications of identifying additional cerebral metastases during gamma knife radiosurgery

Toral R. Patel, Ali K. Ozturk, Jonathan P S Knisely, Veronica L. Chiang

Research output: Contribution to journalReview articlepeer-review

5 Scopus citations


Introduction. Gamma Knife radiosurgery (GK-SRS) is commonly used to treat cerebral metastases. Although additional intracranial metastases are often found on the day of GK-SRS, the significance of finding them is unknown. Methods. A retrospective review of 133 patients undergoing GK-SRS for cerebral metastases was performed. The change in number of metastases detected between initial referral magnetic resonance imaging (MRI) and subsequent treatment MRI was quantified. Multivariate and Kaplan-Meier analyses were employed to examine the significance of identifying additional lesions. Results. Additional lesions were identified in 41 of patients. An increasing number of metastases on referral MRI (P = 0.001) and the presence of progressive systemic disease (P = 0.003) were predictive of identifying additional metastases. Median survival was 6.9 months for patients with additional metastases, compared to 12.1 months for patients without additional metastases (hazard ratio 1.56, P = 0.021). Conclusions. Identifying additional metastases on the day of GK-SRS may add important prognostic information.

Original languageEnglish (US)
Article number748284
JournalInternational Journal of Surgical Oncology
StatePublished - 2012

ASJC Scopus subject areas

  • Surgery
  • Oncology


Dive into the research topics of 'Implications of identifying additional cerebral metastases during gamma knife radiosurgery'. Together they form a unique fingerprint.

Cite this