31-year-old female with headache and blurred vision, evaluate for cerebritis or abscess. Lack of contrast limits evaluation for abscess or infection. Given this caveat:A right frontal approach ventricular catheter is redemonstrated, terminating at the level of the right lateral ventricle, unchanged in position. T2 hyperintensity surrounding the catheter as it traverses the right frontal lobe is stable in appearance. A previously demonstrated subcentimeter pocket of fluid surrounding a small portion of the catheter is also stable (best seen image 19/28, series 501).The ventricles are uniformly small, unchanged. The basal cisterns remain patent.T2 hyperintensity and swelling within the body of the corpus callosum is stable. Scattered additional nonspecific foci of T2 hyperintensity within the cerebral hemispheres are unchanged. No evidence of restricted diffusion is seen, though the diffusion sequences are significantly degraded by susceptibility artifact. A few scattered punctate foci of susceptibility are evident through the cerebral hemispheres compatible with microhemorrhage, but again, a large portion of the susceptibility sequence is degraded by artifact from the shunt system.
1.Lack of contrast limits evaluation for abscess or infection.2.T2 hyperintensity surrounding the frontal approach catheter as it traverses the right frontal lobe is stable in appearance. A previously demonstrated subcentimeter pocket of fluid surrounding a small portion of the catheter is also stable.3.The ventricles are uniformly small, unchanged.4.T2 hyperintensity and swelling within the body of the corpus callosum is stable.