OBJECTIVES: The goals of the study were to describe the MR imaging features of @entity46 of the urinary tract and identify those that suggest intrinsic involvement of ureteric wall. MATERIALS AND METHODS: Thirty-five @entity1 with proven urinary tract @entity46 and who had preoperative MR imaging between 2001 and 2011 were included retrospectively. MR images were intrepreted by one junior and one senior radiologists. To characterize the intrinsic parietal involvement, the ureteric circumference involved by the lesion of @entity46 was noted. RESULTS: Thirty-eight ureteric and 13 @entity1494 were analyzed. They were found in association in nine @entity1 . @entity1901 were bilateral in seven @entity1 . Of the 38 ureteric lesions, 27 were extrinsic and 11 intrinsic at histopathological analysis. Sixteen @entity1 with @entity75 and 10 with intrinsic ones were correctly identified on MR imaging. When the ureter was included less than 360   in the lesion, extrinsic involvement was confirmed in 80% of cases. CONCLUSION: MR imaging appears to be more sensitive (91%vs 82%) but less specific (59% vs 67%) than surgery for the diagnosis of intrinsic form of ureteric location.

Urinary XXXX : MR Imaging appearance with surgical and histological correlations.

@entity1 :: ('9606', 'Species') :: ['women'] @entity1901 :: ('MESH:D014515', 'Disease') :: ['Ureteric lesions'] @entity1494 :: ('MESH:D001745', 'Disease') :: ['bladder lesions'] @entity75 :: ('MESH:D001927', 'Disease') :: ['extrinsic lesions'] @entity46 :: ('MESH:D004715', 'Disease') :: ['endometriosis']
@entity46 :: (MESH:D004715,Disease) :: ['endometriosis']
