Solitary fibrous tumors in abdomen and pelvis: Imaging characteristics and radiologic-pathologic correlation

Core Tip

Core tip: Few studies have investigated the imaging features of solitary fibrous tumors (SFTs) in the abdomen and pelvis. We present the computed tomography and/or magnetic resonance imaging features of fifteen cases, and correlated them with histopathological results. We found that the imaging features of abdominal and pelvic SFTs predominantly appeared as large, well-defined, hypervascular masses with variable degrees of necrosis, cystic change, or hemorrhage that tended to displace adjacent structures. SFTs usually manifested as heterogeneous hyperintensity on T2-weighted images with low signal intensity areas representing flow voids, fibrosis, or collagen. SFTs should be considered when the aforementioned imaging features are encountered.