Image Features of Papillary Tumor of the Pineal Region
10.3969/j.issn.1005-5185.2025.07.009
- VernacularTitle:松果体区乳头状肿瘤的影像学特征
- Author:
Guanjun CHEN
1
;
Yikai XU
1
;
Bingquan LIN
1
Author Information
1. 南方医科大学南方医院影像中心,广东 广州 510515
- Publication Type:Journal Article
- Keywords:
Papillary tumor of the pineal region;
Pinealoma;
Magnetic resonance imaging;
Tomography,X-ray computed;
Diffusion weighted imaging;
Pathology,surgical
- From:
Chinese Journal of Medical Imaging
2025;33(7):735-738,744
- CountryChina
- Language:Chinese
-
Abstract:
Purpose To investigate the CT and MRI features of papillary tumor of the pineal region(PTPR).Materials and Methods A total of seven cases pathologically diagnosed as PTPR in Nanfang Hospital,Southern Medical University from August 2009 to December 2022 were retrospectively analyzed,including patients'clinical and imaging data.Seven patients underwent MRI plain and enhanced scan,and five patients underwent CT scan at the same time.Results Supratentorial hydrocephalus was found in seven cases.The boundary of the tumor was clear,with a maximum diameter of about 1.8-5.9 cm,with an average of(2.8±1.5)cm.The tumors appeared as round in four cases and irregular masses in three cases.MRI showed mixed intensity on T1WI and inhomogeneous slight hyperintensity on T2WI of most cases,in which four lesions showed small patchy hyperintensity on T1WI.Four cases underwent diffusion weighted imaging,and three cases showed limited diffusion.Six PTPR lesions showed cystic degeneration,and three lesions had hemorrhage.On contrast-enhanced scans,most of the tumors demonstrated inhomogeneous moderate to obvious enhancement.The solid components of the lesions showed slightly high density on CT both in five cases,and calcification was present in three cases.Conclusion The imaging findings of PTPR have some characteristics,mostly with well-defined round or irregular masses,the tumor is prone to cystic degeneration,and the hyperintensity on T1WI is one of the characteristic images of the disease.
