OBJECTIVE: It is often difficult to decide whether a cystic @entity75 is a @entity5 or an @entity733 by means of conventional MRI techniques. The immediate diagnosis of a @entity867 is important for the @entity1 's outcome. Our goal was to study the ability of diffusion-weighted imaging and calculation of the apparent diffusion coefficient (ADC) to differentiate between these two pathologies. @entity1 AND METHODS: Ten @entity1 (five @entity1 , five @entity1 ) with cystic @entity75 were examined with MRI. The ADC maps were calculated for each subject and the ADC value of each lesion was measured. Histology revealed @entity463 multiforme in six @entity1 and @entity733 in four @entity1 . RESULTS: All @entity867 showed markedly hyperintense signal changes on diffusion-weighted imaging, whereas the appearance of @entity463 varied from slightly hyperintense to hypointense signal conversion. The mean ADC value calculated in the six @entity1 with @entity1313 was: 2.05 x 10 (-3) mm(2)/s (1.38-2.88 x 10 (-3) mm(2)/s). The mean ADC value of the four @entity1 with @entity867 was: 0.57 x 10 (-3) mm(2)/s (0.38-0.77 x 10 (-3) mm(2)/s). CONCLUSION: Diffusion-weighted imaging and calculation of ADC maps constitute a helpful tool to differentiate between @entity1313 and @entity867 .

Importance of diffusion-weighted imaging in the diagnosis of XXXX and intracerebral abscesses.

@entity1 :: ('9606', 'Species') :: ['women', 'patients', 'patient', 'PATIENTS', 'men'] @entity1313 :: ('MESH:D001932', 'Disease') :: ['cystic brain tumors', 'cystic brain tumor'] @entity75 :: ('MESH:D001927', 'Disease') :: ['brain lesion', 'brain lesions'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor'] @entity733 :: ('MESH:D000038', 'Disease') :: ['abscess'] @entity463 :: ('MESH:D005909', 'Disease') :: ['glioblastoma'] @entity867 :: ('MESH:D001922', 'Disease') :: ['brain abscess', 'brain abscesses']
@entity1313 :: (MESH:D001932,Disease) :: ['cystic brain tumors']
