Background: Several previous reports of anaplastic ependymomas have described their imaging features, and most of these studies were case reports. However, no studies have compared the magnetic resonance imaging (MRI) features between the infratentorial and supratentorial anaplastic ependymomas. Objective: The goal of this study was to explore MRI characteristics for intracranial anaplastic ependymomas. Conclusion: We demonstrate the conventional and functional MRI features of intracranial anaplastic ependymomas, including DWI and MRS. MRI characteristics, such as location, cyst, diffusion restriction, and peritumoral edema, differed between supratentorial and infratentorial locations. Cho/Cr and Cho/ NAA ratios of anaplastic ependymomas are increased.
Synovial sarcomas (SS) are soft tissue neoplasms that usually occur in the vicinity of large joints. Herein, we present the case of a 48-year-old man with renal synovial sarcoma (RSS). The clinical manifestations, computed tomography (CT) scan and magnetic resonance imaging (MRI) features, microscopic characteristics, and immunohistochemical findings of this uncommon tumor are described.
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