Diagnostic value of high-frequency ultrasound for nerve tumor-like lesions in extremities
Objective To investigate the diagnostic value of high-frequency ultrasound for nerve tumor-like lesions in ex-tremities.Methods A total of 30 extremities nerve tumor-like patients with space-occupying lesions diagnosed by surgery and pathology were enrolled,which included 14 males and 16 females,aged 6-81 years old with mean age of 50.3 years old.The diameter of mass was 0.4-11.2 cm with mean diameter of 3.4 cm.All of them performed high-frequency ultransound ex-amination to observe the location,shape,size,boundary,internal echo and blood flow of mass,and further compared with in-traoperative mass location and postoperative pathological results,the ultrasonic characteristics of mass were subsequently ana-lyzed.Results Among 30 cases of nerve mass,27 were benign and 3 were malignant;19 cases were schwannomas and 11 were the others.The coincidence rate of ultrasound localization diagnosis was 73.3％(22/30),and coincidence rate of qualitative diag-nosis was 53.3％(16/30);the diagnostic coincidence rate of traumatic neuroma was 100.0％(2/2),and schwannoma was 73.7％(14/19).One of the benign cases was misdiagnosed as malignant,and the postoperative pathological diagnosis was nodular fasci-itis.The ultrasound showed 76.7％(23/30)masses with"mouse tail sign";83.3％(25/30)of masses were hypoechoic;target sign was found in 8 cases,all of them were schwannomas;76.7％(23/30)of masses were regular and 7 were irregular in shape,and 1 case of nodular fasciitis showed multiple"fascial tail sign";grade 1-2 blood flow was found in 53.3％(16/30)nerve masses.There were 2 cases of swelling mass-associated nerve trunk,1 of lymphoma and 1 of schwannoma.Conclusion It is demonstrated that schwannomas is the most common tumor-like lesions in extremities,and the ultrasound displays high accuracy in diagnosing nerve tumor-like lesions in extremities.
nerves tumor-like lesionsextremitieshigh frequency ultrasounddiagnosis
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