Objective To explore the clinical value of ultrasound in the diagnosis of limb epithelioid sarcoma.Methods A total of 43 patients with limb epithelioid sarcoma confirmed by surgery and pathology were collected.The preoperative sonographic characteristics of the lesions were analyzed,and recurrence was followed up.Results Ultrasound imaging in all 43 cases of limb epithelioid sarcoma clearly identified the lesion location with a 100%localization accuracy.The sonographic characteristics included lump-like hypoechoic masses without a capsule,with an average maximum diameter of(5.73±4.99)cm,mainly solid(81.4%,35/43),unclear boundary(55.8%,24/43),irregular shape(88.4%,38/43),uneven internal echo(95.3%,41/43),mostly single lesions(72.1%,31/43),and predominantly classified as Adler grade Ⅲ for blood flow(53.5%,24/43).Ultrasound identified soft tissue masses in 42 cases,while the tumor was not apparent and diagnosed as a neuropathic lesion with scar adhesion by ultrasound in 1 case.Postoperative follow-up ranging from 3 months to 8 years revealed that ultrasound detected recurrence in 22 cases,with uneven solid hypoechoic masses with unclear margins(68.2%,15/22),irregular shapes(72.7%,16/22),and blood flow grading of Adler grade Ⅰ.Conclusion Ultrasound can clearly delineate the extent of limb epithelioid sarcoma lesions and surrounding tissue involvement preoperatively,and also serves as a valuable tool for dynamic postoperative follow-up.
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