Pool sign on T2WI for differentiating solitary brain metastasis from mass type high grade glioma
10.13929/j.issn.1003-3289.2025.09.008
- VernacularTitle:T2WI池征鉴别单发脑转移瘤与肿块型高级别胶质瘤
- Author:
Man WANG
1
;
Jiayi SUN
1
;
Jinghan ZHAO
1
;
Yanwei MIAO
1
Author Information
1. 大连医科大学附属第一医院放射科,辽宁大连 116011
- Publication Type:Journal Article
- Keywords:
brain neoplasms;
neoplasm metastasis;
glioma;
magnetic resonance imaging
- From:
Chinese Journal of Medical Imaging Technology
2025;41(9):1494-1497
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the value of pool sign on T2WI for differentiating solitary brain metastasis(SBM)from solitary mass type high grade glioma(HGG).Methods Totally 120 patients with SBM(SBM group)and 184 patients with solitary mass type HGG(HGG group)confirmed by postoperative pathology or clinical follow-up were retrospectively enrolled.The incidence of pool sign were compared between groups,and the efficacy of pool sign for differentiating SBM from solitary mass type HGG was analyzed.Results Pool sign was noticed in 37 cases(37/120,30.83％)in SBM group and 9 cases(9/184,4.89％)in HGG group,the incidence of pool sign in SBM group was higher than that in HGG group(x2=38.063,P＜0.001).The sensitivity,specificity,positive predictive value and negative predictive value of pool sign for differentiating SBM and solitary mass type HGG was 30.83％(37/120),95.11％(175/184),80.43％(37/46)and 67.83％(175/258),respectively.In SBM group,the incidence of pool sign in cases with primary tumor of adenocarcinoma,squamous cell carcinoma and neuroendocrine carcinoma was 40.79％(31/76),16.67％(3/18)and 12.50％(3/24),respectively,with significant difference(x2=8.911,P=0.012),while compared pairwisely showed significant difference between SBM of adenocarcinoma and neuroendocrine carcinoma(x2=6.505,P=0.011).Conclusion The pool sign on T2WI was helpful for differentiating SBM,especially SBM of adenocarcinoma from solitary mass type HGG.
