CT,MRI and DSA Appearances of Giant Cell Tumors of Bone in Unusual Sites

VernacularTitle:特殊部位骨巨细胞瘤的CT、MR及DSA表现
Author: Wanyin SHI ; Xindao YIN ; Liping WANG ; Jianping GU
Publication Type:Journal Article
Keywords: bone; giant cell tumor; MR imaging; tomography,X-ray computed; digital subtraction angiography
From: Journal of Practical Radiology 2010;26(1):74-76
CountryChina
Language:Chinese
Abstract: Objective To investigate retrospectively CT,MRI and DSA appearances of giant cell tumors(GCT) of bone in unusual sites,in order to improve the diagnosis of it.Methods CT,MRI and DSA features of GCT in 11 cases proved by surgery and pathology,were retrospectively analyzed.GCTs located in iliac bone in 4,sacral vertebrae in 3,ischial bone in 2, calcaneus and temporal bone in one respectively.Results (1) At CT,the tumors were mainly showed as expanding growth and osteolytic destruction,without periosteal reaction and calcification.(2)At MRI,the tumors were hypo-,isointensity on T_1WI and heterogeneously iso, hyperintensity on T_2WI.Low intensity curvilinear strips inside the tumor on T_1WI and T_2WI were found in 5 patients,and "bright patches sign" on T_2WI were also displayed in 2 cases.(3)At DSA,abundant blood supply to the tumors was demonstrated,the thickened and twisted feeding artery and,"tumor's stain sign" were also found.Conclusion To analyse imaging data synthetically,including CT,MR imaging and DSA,can improve the knowledge of GCT of bone in unusual sites.