Imaging Features of Neural Synovial Sarcoma: A Case Report

Synovial sarcoma (SS) is a malignant tumor characterized by biphasic differentiation of mesenchymal and epithelial components. It typically arises in the deep soft tissues of the extremities and is rarely found within nerves. However, when occurring in neural tissues, it poses significant diagnostic challenges due to its potential to be mistaken for other types of nerve tumors. In recent years, ultrasound and magnetic resonance imaging (MRI) have played crucial roles in the early diagnosis of soft tissue tumors. Ultrasound provides real-time visualization of tumor size, morphology, margins, and vascularization characteristics, while MRI offers detailed information on tumor distribution, tissue characteristics, and extent of invasion. This article presents a case of SS located in the common peroneal nerve, with a comparative analysis of its imaging features on ultrasound and MRI, aiming to provide valuable insights for early clinical diagnosis.