CT and MRI findings of giant cell tumors of the temporal bone

VernacularTitle:颞骨骨巨细胞瘤的C T、MR I表现
Author: Zhiwei HAN ; Jingji XU ; Hong YIN ; Guangquan WEI ; Jinsong ZHANG
Keywords: the temporal bone; giant cell tumor; computed tomography; magnetic resonance imaging
From: Journal of Practical Radiology 2016;32(12):1850-1852
CountryChina
Language:Chinese
Abstract: Objective To investigate CT and MRI findings of giant cell tumors of the temporal bone(GCTTB).Methods CT and MRI features of 5 cases pathologically proven GCTTB were retrospectively reviewed.The lesion characteristics,including location, size,shape,margin,attenuation on CT scans,signal intensity on MR images,and enhancement pattern were documented and analyzed.Results In all 5 patients,the lesions were located adj acent to the mandibular fossa.These lesions were round or oval in shape,predominantly demonstrated as expansive lytic bone destruction containing hyperattenuating septa,calcifications,non-sclerotic borders,and discontinuous bony shells,with“boundary angle”sign.No soft tissue masses were found around the lesions.These lesions with different content demonstrated various MRI signal intensity,and the solid component enhanced intensely.Conclusion GCTTB is rare.Features such as expansive growing pattern,discontinuous bony shell,intralesional septa,calcification,and “boundary angle”sign are common,which may help in the radiographic diagnosis of giant cell tumor.