Imaging features analysis of 26 patients of pleomorphic xanthoastrocytoma and summary of literature
10.3760/cma.j.issn.1673-4904.2014.30.006
- VernacularTitle:多形性黄色星形细胞瘤26例影像表现及文献总结
- Author:
Hongjun ZHAO
;
Ruxin SUI
;
Caoyuan QI
;
Weibin GU
;
Jun MA
- Publication Type:Journal Article
- Keywords:
Astrocytoma;
Calcifnosis;
Solid and cystic lesions;
Diagnostic imaging
- From:
Chinese Journal of Postgraduates of Medicine
2014;37(30):17-20
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyse the CT,MRI features of pleomorphic xanthoastrocytoma and improve the diagnosis.Methods Imaging feature of pleomorphic xanthoastrocytoma of 26 cases confirmed by surgery and pathology were analyzed retrospectively.Distribution,size,shape,signal,dense,peritumor edema and invasion of adjacent structures of lesion were summarized.Results The locations of lesions included:temporosphenoid lobe (19 cases),frontal lobe (2 cases),the lateral and three ventricles in 1 case,occipital lobe (1 case),medulla oblongata (1 case),and cervical cord (1 case).The tumor size:maximum:82 mm × 40 mm × 70 mm,minimum:16 mm × 13 mm × 14 mm.Solid lesions (3 cases),solid lesions with necrosis (7 cases),solid and cystic lesions (16 cases),lesion with calcification (4 cases).The solid lesions of the tumors showed equal signal intensity or slightly low signal intensity on T1WI,and equal signal intensity or slightly high signal intensity on T2WI.The equidensite and high density on CT,peritumor edema degree:mild (2 cases),moderate (5 cases),severe (1 case).Conclusion The characteristic imaging features can help in the understanding and diagnosis of pleomorphic xanthoastrocytoma.
