MRI Findings and Diagnostic Significance of Soft Tissue Schwannomas in the Extremities  

作　　者：Guoping Zhang Xiaoli Chen 

机构地区：[1]Center of Diagnostic Medical Imaging,Shaanxi Provincial People’s Hospital,Xi’an 710068,Shaanxi Province,China [2]Department of Neurology,Shaanxi Provincial People’s Hospital,Xi’an 710068,Shaanxi Province,China

出　　处：《Journal of Clinical and Nursing Research》2024年第8期31-36,共6页临床护理研究（英文）

摘　　要：Objective:To analyze the MRI features and rare manifestations of schwannomas of the extremities to improve diagnosis.Methods:Retrospective analysis of 23 cases of schwannomas in the extremities confirmed by surgical pathology,summarizing its signs,signal characteristics and MRI enhancement.Results:Among the 23 cases,20 were single lesions,and 3 were multiple lesions,resulting in a total of 28 lesions.The distribution of these lesions included 7 in the thigh,9 in the calves,4 in the armpits,3 in the hips,and 4 each in the upper arms and forearms.Additionally,there was one lesion located in the groin.On T1-weighted imaging(T1WI),the lesions showed iso-intensity or hypo-intensity.On T2-weighted imaging(T2WI),they appeared slightly hyperintense or hyper-intense.Some lesions exhibited multiple small vesicle-like higher signals,cystic changes,and fiber spacing on T2WI.Furthermore,one lesion showed a liquid-liquid plane.The“target sign”was observed in 18 lesions(64.3%)and“neuropathic signs”were present in six lesions(21.4%).Finally,it was noted that on MRI enhancement,the lesions demonstrated uniform or uneven enhancement.The lesions were uniformly or unevenly enhanced on MRI enhancement.Conclusions:The MRI findings of schwannoma in the extremities exhibit specific characteristics.The cystic changes on T2WI also display distinct features.Recognition of rare MRI findings,such as cystic changes,liquid-liquid plane and septum,should be emphasized to enhance the accuracy of pre-diagnosing schwannomas.

关 键 词：SCHWANNOMAS EXTREMITIES Magnetic resonance imaging 

分 类 号：R73[医药卫生—肿瘤]