ABSTRACT
Objective To investigate the CT and MRI manifestations of intra-abdominal aggressive fibromatosis and correlation with pathology.Methods The CT and MRI manifestations of 26 cases with intra-abdominal aggressive fibromatosis confirmed by pathological examination were analyzed retrospectively.Results 26 cases showed single solid mass,13 cases showed well-circumscribed and round-like,9 cases wrapped around the common bile duct,intestine or ureter,4 cases were lobulated which had unclear margin with surrounding tissues in pelvic.All the lesions displayed isodensity or slightly low density non-enhanced CT appearance,heterogenous high intensity FS T2WI,some larger tumors showed mixed signal.CT/MRI enhanced scan showed gradual enhancement in 26 cases.Conclusion Intra-abdominal aggressive fibromatosis have some certain imaging features,MRI can offer the histo logical features of tumors and have some correlation with pathology.