XXXX and 'disappearing' brain lesions.

@entity1 @entity410 @entity49 @entity1805 @entity715
BACKGROUND-- @entity1 with @entity410 may have abnormal brain imaging. Lesions demonstrated on computerized tomography or magnetic resonance imaging often suggest the underlying cause of the @entity410 , and may prompt an invasive investigation for diagnosis and treatment. In an increasingly recognized subset of @entity1 however, the imaged lesions spontaneously resolve. While poorly understood, these 'disappearing' lesions may in fact be the consequence of @entity410 , rather than the cause. Two @entity1 with 'disappearing' lesions are presented: the first @entity1 had a proven cause, the second a probable one. Case 1. A @entity1 with new onset @entity410 had an abnormal MRI. An angiogram confirmed @entity715 of the straight sinus. On follow-up, she was doing well; repeat imaging was normal with resolution of the lesion. Case 2. A @entity1 with a long @entity410 history had been well controlled on medications, and had no change in frequency of her @entity410 . She was found to have a @entity1805 . MRI revealed a right parieto-occipital lesion. The @entity1 refused further work-up and was lost to follow-up. She returned almost a year later; repeat imaging was normal. CONCLUSION-- @entity1 with @entity410 and abnormal imaging suggestive of structural lesions may occasionally have lesions that resolve spontaneously. While some diagnoses remain elusive, an important consideration to exclude in these @entity1 is @entity49 .
