CT and MRI manifestations of polymorphous low-grade neuroepithelial tumor of the young
10.13929/j.issn.1003-3289.2025.04.015
- VernacularTitle:青少年多形性低级别神经上皮肿瘤CT及MRI表现
- Author:
Jie LI
1
;
Mengyuan YUAN
;
Bingxin PANG
;
Junmei WANG
;
Zhuo LI
;
Shengjun SUN
Author Information
1. 邢台市人民医院神经内四科,河北 邢台 054001;首都医科大学附属北京天坛医院放射科,北京 100070
- Publication Type:Journal Article
- Keywords:
neoplasms,neuroepithelial;
magnetic resonance imaging;
tomography,X-ray computed
- From:
Chinese Journal of Medical Imaging Technology
2025;41(4):578-582
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe CT and MRI manifestations of polymorphous low-grade neuroepithelial tumor of the young(PLNTY).Methods Totally 21 cases of PLNTY confirmed by pathology were retrospectively enrolled,and CT and MRI manifestations of the lesions were observed.Results Single supratentorial tumor was found in all 21 cases,including 13 cases of isolated brain parenchymal type,6 cases of diffuse brain parenchymal type and 2 cases of extra parenchymal type PLNTY.Diffusion weighted imaging(DWI)showed no diffusion limitation in all 21 cases,and a few cases with mild peritumoral edema.Among 13 cases of isolated brain parenchymal PLNTY,7 cases presented as calcified nodules,5 cases presented as cystic lesions and 1 case as solid nodule.After administration of contrast agents,no enhancement was found in 11 cases,while mild local enhancement was observed in 2 cases.Six cases of diffuse brain parenchymal PLNTY presented as diffuse thickening of the cortex in lesion area,with abnormal signals in the subcortical white matter in 4 cases.After administration of contrast agents,no enhancement was found in 4 cases,while mild local enhancement was noticed in 2 cases.Two cases of extra parenchymal PLNTY presented as solid mass with calcification,with equal density on CT and mild local enhancement on enhanced MRI.Conclusion CT and MRI manifestations of PLNTY had certain characteristics.
