A single institutional outcome analysis of Gamma Knife radiosurgery for single or multiple brain metastases.

Abstract:

:Although Gamma Knife stereotactic radiosurgery (SRS) is widely used for metastatic brain tumors, optimal patient selection and treatment strategy continue to be investigated. The aim of this study was to provide treatment results with Gamma Knife SRS and to establish prognostic factors. Of the 54 patients treated from 1990 to 1997, 51 patients were evaluable. There were 28 males and 23 females, with a median age of 60 years. Median Karnofsky Index was 80. There were 19 non-small cell lung cancers, eight colon cancers, six renal cell cancers, five ovarian cancers, four gastric cancers, three breast cancers, and six others. Primary tumors were controlled in 33 patients, and extracranial tumors were absent in 25 patients. Sixty-eight metastatic brain tumors in 37 patients underwent SRS as an initial treatment for the brain metastasis. Brain metastasis was solitary in 32 patients. Conventional radiation was combined with SRS in 29 patients, 24 of whom received whole brain radiotherapy. Eight patients had some form of surgical resection. Median survival time was 7.4 months. Five-year actuarial survival and local control rates were 16 and 52%, respectively. Median duration time of keeping pretreatment quality of life was 6.9 months. On a multivariate analysis, uncontrolled primary tumor, combined conventional radiotherapy, and performance status were statistically significant prognostic factors. Four patients who underwent whole brain radiation developed low grade dementia.

journal_name

Clin Neurol Neurosurg

authors

Nakagawa K,Tago M,Terahara A,Aoki Y,Sasaki T,Kurita H,Shin M,Kawamoto S,Kirino T,Otomo K

doi

10.1016/s0303-8467(00)00117-7

keywords:

subject

Has Abstract

pub_date

2000-12-01 00:00:00

pages

227-232

issue

4

eissn

0303-8467

issn

1872-6968

pii

S0303846700001177

journal_volume

102

pub_type

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