OBJECTIVES: Computed tomography (CT) and magnetic resonance imaging (MRI) are the main imaging modalities used for analysis of @entity75 . We compared the ability of CT and MRI to detect and characterize benign @entity75 . @entity1 AND METHODS: Unenhanced abdominal CT and MRI were performed in 16 @entity1 (age range 39-77), and reviewed by a radiologist with 6years of experience in abdominal imaging. The presence, number, size and structure of each mass were analyzed and compared between the two modalities. RESULTS: There were 18 adrenal masses in 11 @entity1 , four @entity1 had @entity774 ( @entity774 ), whereas one @entity1 had left-sided @entity774 and right-sided @entity652 . Ten masses were>= 2cm in diameter, and were perfectly depicted using CT and all MRI techniques. There were nine masses with diameter<2cm detected by CT, three of them were missed using MRI. @entity774 was detected in five @entity1 using CT, but its mild form was missed in one @entity1 using MRI. Four masses with attenuation values of>10Hounsfield units could not be characterized using unenhanced CT, but three of them were characterized using MRI. CONCLUSION: CT has higher sensitivity for detection of small @entity5 and @entity774 than MRI. MRI is an important tool in characterization of adrenal masses that could not be characterized using unenhanced CT.

Should we use CT or MRI for detection and characterization of benign XXXX ?

@entity1 :: ('9606', 'Species') :: ['patients', 'patient', 'PATIENTS'] @entity75 :: ('MESH:D001927', 'Disease') :: ['adrenal lesions'] @entity5 :: ('MESH:D009369', 'Disease') :: ['adrenal tumours'] @entity652 :: ('MESH:D000236', 'Disease') :: ['adenoma'] @entity774 :: ('MESH:D000312', 'Disease') :: ['AH', 'adrenal hyperplasia']
@entity75 :: (MESH:D001927,Disease) :: ['adrenal lesions']
