Diagnostic performance of increased signal intensity within the resection cavity on fluid-attenuated inversion recovery sequences for detection of progression in patients with glioma.

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Diagnostic performance of increased signal intensity within the resection cavity on fluid-attenuated inversion recovery sequences for detection of progression in patients with glioma.

World Neurosurg. 2017 Dec 08;:

Authors: Zhang J, Song Y, He M, Ren Q, Zeng Y, Liu Z, Liu H, Xu J

Abstract
OBJECT: The aim of this study was to systematically evaluate the diagnostic performance of increased signal intensity within the resection cavity on fluid-attenuated inversion recovery (FLAIR) sequences for detection of progression in patients with glioma through performing a meta-analysis.
METHODS: PubMed, Web of Science, EMBASE, Cochrane Library and China National Knowledge Infrastructure were searched for potentially relevant literature. The study characteristics and relevant data were extracted. We estimated the pooled sensitivity, specificity, positive likelihood ratios, negative likelihood ratios and diagnostic odds ratio, and constructed summary receiver operating characteristics curves to identify the diagnostic value of FLAIR signal increase for detection of glioma progression.
RESULTS: A total of four studies with 438 patients were included. The pooled sensitivity and specificity of increased signal intensity in FLAIR sequences in the resection cavity for detection of glioma progression were 0.36 (95% CI 0.31-0.42) and 0.93 (95% CI 0.86-0.97), respectively. The area under the curve (AUC) was 0.7505. Subgroup analyses were also performed according to different patient sources, tumor grades, and definitions of progression. No significant publication bias was found in the meta-analysis (p=0.85).
CONCLUSIONS: Our results suggested that increased signal intensity within the resection cavity on FLAIR sequences could indicate tumor progression early with high specificity in patients with glioma. This readily accessible sign could implicate closer monitoring, and could be crucial for therapeutic decisions and outcome. However, due to the limited number of studies, more well-designed studies are warranted to further verify our results and elucidate the underlining mechanisms.

PMID: 29229341 [PubMed - as supplied by publisher]

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