CT"cut-edge sign"for differentiating complex thymic cyst and thymic epithelial tumor with diameter less than 4 cm
10.13929/j.issn.1003-3289.2023.12.018
- VernacularTitle:CT"切缘征"鉴别直径＜4cm复杂胸腺囊肿与胸腺上皮肿瘤
- Author:
Bofeng ZHAO
1
;
Xiaohan GUO
;
Ping CHEN
;
Wei FENG
;
Donghong WEI
;
Baoying CHEN
Author Information
1. 西安国际医学中心医院影像诊疗中心,陕西西安 710700
- Keywords:
mediastinal cyst;
thymus neoplasms;
tomography,X-ray computed
- From:
Chinese Journal of Medical Imaging Technology
2023;39(12):1823-1826
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the value of CT"cut-edge sign"for differentiating complex thymic cyst and thymic epithelial tumor(TET)with diameter less than 4 cm.Methods Data of 24 patients with complex thymic cyst(complex thymic cyst group)and 14 patients with TET(TET group)confirmed by surgical pathology who underwent plain and dual-phase enhanced chest CT scanning were retrospectively analyzed.CT"cut-edge sign"was evaluated by 2 physicians,and the inter-observer consistency was evaluated using intra-class correlation coefficient(ICC).The detection rate of CT"cut-edge sign"was compared between groups using logistic regression analysis.Receiver operating characteristic(ROC)curve was drawn,and the area under the curve(AUC)was calculated to evaluate the efficacy of CT"cut-edge sign"for differentiating complex thymic cyst and TET.Results The inter-observer consistency of CT"cut-edge sign"was good(ICC=0.94,95％CI[0.90,0.97]).The detection rate of CT"cut-edge sign"in complex thymic cyst group was 62.50％(15/24),higher than in TET group(2/14,14.29％)(P＜0.01).The sensitivity,specificity,accuracy and AUC of CT"cut-edge sign"for differentiating complex thymic cyst and TET was 62.50％(15/24),85.71％(12/14),71.05％(27/38)and 0.74,respectively.Conclusion CT"cut-edge sign"was helpful for differentiating complex thymic cyst and TET with diameter less than 4 cm.
