CT and MR imaging diagnosis of intracranial teratomas
10.3760/cma.j.issn.1671-8925.2015.09.006
- VernacularTitle:颅内畸胎瘤的CT和MRI诊断
- Author:
Jingwen WU
1
;
Xianlong WANG
;
Yanhong LIN
;
Lyujin FENG
;
Chunxiu JIANG
;
Zhibo WEN
Author Information
1. 南方医科大学珠江医院放射科
- Keywords:
Intracranial teratoma;
X-ray computed tomography;
Magnetic resonance imaging
- From:
Chinese Journal of Neuromedicine
2015;14(9):890-893
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the CT and MR imaging features of intracranial teratomas to improve the diagnostic accuracy.Methods Twenty patients with intracranial teratomas,admitted to and performed surgery in our hospital from January 2010 and January 2014,were chosen;the teratoma was confirmed by histopathology.The CT and MR imaging features,clinical and pathology materials of these patients were retrospectively analyzed.Results Twelve immature teratomas,7 mature teratomas and one teratoma with malignant transformation were noted;18 patients were in the central line area and 2 were not.In the 9 patients performed CT scan,7 showed heterogeneous mass;peritumoral calcification was more common than intratumoral calcification,and it turned out to be round with diameter less than 1 cm,while intratumoral calcification was multifocally strip and patchy.In the 17 patients performed MR imaging,14 showed heterogeneous signal and fatty signal was detected in 3;enhanced MR imaging showed that 6 presented nodular enhancement,3 presented multilocular enhancement markedly,patchy enhancement showed in 2,and one showed marked enhancement in mural nodule and cystic wall.In 8 patients performed diffusion-weighted imaging,7 displayed hypointense to isointense and one demonstrated isointense to hyperintense.Conclusions Intracranial teratoma has some characteristic imaging features,so by combining clinical materials,it should be considered when fatty component is detected in a heterogeneous intensity tumor with multiple cystic change,calcification and a hypointense to isointense signal on DWI;however,pathology is needed to make a definite diagnosis.
