PURPOSE: To evaluate whether @entity362 , atypical @entity5 , and @entity1821 can be differentiated by MR images. MATERIAL AND METHODS: The MR images of 59 @entity75 were retrospectively reviewed. Apart from size, surgical site, location and margins, the percentage of fat of the @entity5 volume was assessed as none, 1-75%, 75-95%, or 95-100%. RESULTS: None of the 18 @entity1821 contained fat that could be recognized by MR imaging. The 3 atypical @entity5 all contained fat but less than 75% of the @entity5 volume. In 32 of 38 @entity362 , the percentage of fat was 95-100%, and in 4 less than 95% of the @entity5 volume. Two @entity362 did not contain fat that could be recognized by MR imaging. CONCLUSION: A lesion which predominantly has a fat signal is, in all probability, an @entity362 . Lesions with less fat, but still mostly fatty, may either be @entity362 or atypical @entity5 . In this group, the discrimination between these two entities cannot be based upon imaging features. In the absence of a fat signal, @entity1821 or @entity362 cannot be differentiated from other soft tissue @entity5 .

MR imaging of XXXX and @entity1821 .

@entity362 :: ('MESH:D008067', 'Disease') :: ['lipoma', 'ordinary lipoma', 'lipomas', 'ordinary lipomas'] @entity1821 :: ('MESH:D008080', 'Disease') :: ['liposarcomas', 'liposarcoma'] @entity5 :: ('MESH:D009369', 'Disease') :: ['lipomatous tumors', 'tumor', 'lipomatous tumor', 'tumors'] @entity75 :: ('MESH:D001927', 'Disease') :: ['lipomatous lesions and liposarcomas']
@entity362 :: (MESH:D008067,Disease) :: ['lipoma']
