CT FINDINGS AND PATHOLOGICAL MANIFESTATIONS OF ABDOMINAL SOLITARY FIBROUS TUMOR
Objective To investigate the CT features of abdominal solitary fibrous tumor (SFT).Methods A retrospective analysis was performed for the CT findings and pathological manifestations of 12 patients with pathologically confirmed abdominal SFT.Results Among the 12 patients with SFT,2 underwent CT plain scan alone,4 underwent contrast-enhanced CT scan alone,and 6 underwent CT plain scan and contrast-enhanced CT scan.CT scan showed that 6 lesions were located in the abdominal cavity,2 in the pelvic cavity,and 4 in the retroperitoneum.The maximum diameter of these lesions exceeded 6 cm and the lesions had an oval or lobular shape;eight of them had clear boundaries.CT plain scan showed that 1 lesion had homogeneous density,7 had heterogeneous density,among which 6 had patchy or striped low-density areas.Contrast-enhanced CT scan showed 9 lesions had inhomogeneous enhancement in arterial phase and continuous enhancement in venous phase and delayed phase,and 8 had the shadow of tortuous vessels and/or were surrounded by vessels.Patchy low-density areas on CT plain scan had no enhancement on contrast-enhanced CT scan and were considered cystic or necrotic areas in pathology;striped low-density areas had mild delayed enhancement and were considered rich in fibers in pathology.Conclusion Abdominal SFT has unique CT features.Low-density areas on CT plain scan show no enhancement or mild delayed enhancement on contrast-enhanced CT scan,and the enhancement mode is "fast forward and slow out",which may help with the diagnosis of this tumor.
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维普
