• Wenxue Li, Shanshan Zhang, Wenting Fan, Diancheng Li, Hui Tian, Dongdong Che, Lei Yu, Shuang Gao, and Yiqun Liu.
• Department of Ultrasound, Peking University People's Hospital, Beijing, People's Republic of China.
• Medicine (Baltimore). 2022 Nov 18; 101 (46): e31905e31905.

BackgroundAlveolar soft part sarcoma (ASPS) is a rare tumor but potentially fatal condition. Understanding the imaging and clinical features of ASPS is of certain value for preoperative qualitative diagnosis and clinical treatment of tumors. Nevertheless, there have been only 11 documented case reports describing the sonographic features in the English literature.MethodsThree patients with confirmed ASPS occurring primarily in the limbs were enrolled in this study. Complete surgical excision was performed with conservative limb function. We pay particular attention to the ultrasonographic features and performed a literature review of ASPS cases.ResultsWith regular surveillance, one patient had no symptom recurrence and two developed lung and/or breast metastasis later. The specific sonographic findings were heterogeneous hypoechoic, well-circumscribed, and lobulated or round contours on grayscale images, abundant flow signals of intratumoral and extratumoral tubular structures on color Doppler images.Conclusion SubsectionsIts low incidence rate and lack of characteristic clinical manifestations often result in misdiagnosis of ASPS. The specific sonographic findings may add useful diagnostic information.Copyright © 2022 the Author(s). Published by Wolters Kluwer Health, Inc.

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