Case Examples
Representative ST-RADS cases from Chhabra et al., AJR 2025.
Educational Use Only. These cases are adapted from the published ACR ST-RADS manuscript. They do not constitute medical advice.
ST-RADS 2
Very Low Risk
Geyser Phenomenon
Geyser Phenomenon (Supraclavicular Mass)
76-year-old patient with gradually increasing supraclavicular mass
ST-RADS 3
Low Risk
Hematoma
Subcutaneous Hematoma (Posterior Forearm)
65-year-old patient with mass in posterior forearm after subacute injury
ST-RADS 4
Intermediate Risk
Atypical Lipomatous Tumor (ALT/WDL)
Atypical Lipomatous Tumor (Anterior Thigh)
35-year-old woman with mass in anterior thigh
ST-RADS 5
High Risk
Leiomyosarcoma
Leiomyosarcoma (Thigh Mass)
45-year-old woman with gradually increasing thigh mass
ST-RADS 6C
Known Tumor — Progressive
Pleomorphic Rhabdomyosarcoma (Progressive)
Progressive Pleomorphic Rhabdomyosarcoma (Thigh)
45-year-old patient receiving chemotherapy for known pleomorphic rhabdomyosarcoma of thigh
Cases adapted from: Chhabra A, Garner HW, Rehman M, et al. Soft Tissue-RADS: An ACR Work-in-Progress Framework. AJR 2025.