Multimodality Imaging Findings of Primary Embryonal Rhabdomyosarcoma in the Prostate: A Rare Case Report

Embryonal rhabdomyosarcoma (ERMS) of the prostate is an extremely rare malignant tumor, which often presents with urinary symptoms. We report a 32‐year‐old male with recurrent urinary retention diagnosed with prostatic ERMS via surgical pathology. This case analyzes the reasons for initial misdiagnosis and details multimodal imaging features on ultrasound (US), contrast‐enhanced ultrasound (CEUS), CT, and MRI. Notably, this report provides the first description of the CEUS enhancement pattern in prostatic ERMS, which may represent a unique imaging characteristic.