The imaging features of papillary glioneuronal tumor
10.3969/j.issn.1002-1671.2025.10.006
- VernacularTitle:乳头状胶质神经元肿瘤的影像学表现
- Author:
Bingxin PANG
1
;
Mengyuan YUAN
;
Jie LI
;
Shengjun SUN
Author Information
1. 邢台市人民医院CT/MR科,河北 邢台 054001
- Publication Type:Journal Article
- Keywords:
papillary glioneuronal tumor;
computed tomography;
magnetic resonance imaging
- From:
Journal of Practical Radiology
2025;41(10):1619-1623
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the imaging features of papillary glioneuronal tumor(PGNT).Methods The CT and MRI data of 54 patients with PGNT confirmed by surgical pathology were analyzed retrospectively.Results Fifty cases were located in the supratentorial area and 4 cases in the subtentorial area.41 cases were adjacent to the lateral ventricles,10 cases were far from the lateral ventricles,and 3 cases were located in the intraventricular.24 cases were cystic,21 cases were cystic-solid,and 9 cases were solid.In the solid part,28 cases showed obvious hegerogeneous enhancement,and 2 cases showed no enhancement.In 36 cases of cyst walls,17 cases showed obvious enhancement,and 19 cases showed no enhancement.In 17 cases of separation,11 cases showed"spiderweb-like"separation and 6 cases showed line-like separation,meanwhile,13 cases showed obvious enhancement,and 4 cases showed no enhancement.12 cases showed the ring of hemosiderin at the edge of the tumor on T2WI.35 cases underwent CT scan,and 15 cases showed calcification.None of the 54 cases showed restricted diffusion.2 cases showed hemorrhage.14 cases showed peritumoral edema.26 cases showed mild mass effect.Conclusion PGNT typically manifests as a cystic or cystic-solid mass in the supratentorial area around the lateral ventricles.It is often accompanied by calcification,"spiderweb-like"separation and the ring of hemosiderin at the edge of the tumor on T2WI,with minimal hemorrhage,no restricted diffusion,obvious enhancement of the solid part,no obvious peritumoral edema,and mild mass effect.
