OBJECTIVES: To describe the imaging characteristics of superficial @entity765 using magnetic resonance imaging (MRI) and @entity2101 ( @entity2101 ). METHODS: We retrospectively examined 18 @entity1 (12 females and 6 males) with histologically proven superficial desmoids. Fourteen @entity1 received MRI examinations, while 12 @entity1 were examined with @entity2101 . The lesions were assessed with regard to location, muscular fascia involvement, and spread into the subcutaneous fatty tissue septa, adjacent muscle, and bone. In addition, size, shape, signal intensity/echogenicity relative to muscle, amount of collagen components, Doppler vascularity on @entity2101 and the degree of contrast enhancement in MRI were evaluated. RESULTS: Altogether there were 20 subcutaneous lesions: six involved the chest wall and the breasts, five the hip, four each the shoulder and the flank, and one the abdominal wall. All but three lesions showed a stellar-type configuration with multiple irregular sun-burst-like extensions along the fascial planes and septa of the subcutaneous fat tissue. The extensions spread away from the main @entity5 focus, and in nine lesions, these extensions reached the cutis. The remaining three lesions had a spindle shape and also presented extensions along the fascial planes. Another imaging feature in all lesions was the presence of variable amounts of collagen components, with typical low signal on MRI and/or fibrillar hyperechoic appearance in @entity2101 . CONCLUSION: The distinctive imaging features of collagen components associated with sun-burst-like extensions in our sample of superficial desmoids are valuable diagnostic clues in the challenging non-invasive differential diagnosis of these @entity5 .

XXXX : MRI and ultrasound imaging characteristics.

@entity1 :: ('9606', 'Species') :: ['patients'] @entity765 :: ('MESH:D018222', 'Disease') :: ['desmoid tumors'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor', 'tumors'] @entity2101 :: ('MESH:C538394', 'Disease') :: ['high-resolution sonography', 'HRUS']
@entity765 :: (MESH:D018222,Disease) :: ['Superficial desmoid tumors']
