Type I glutaric acidity with arachnoidal cysts

Two sisters are shown who have been diagnosed as having glutaric acidity (GA) type I, in the neuroimage of which bilateral arachnoidal cysts were shown. There is a remarkable lack of correlation between the clinical status of the patients and the arachnoidal cysts. The younger sister developed the first symptoms of her illness at around 5 years of age, whereas the cysts had already been diagnosed at the age of one. It was considered convenient to doubt the diagnosis of type I GA, given the presence of bilateral or familiar arachnoidal cysts, despite the lack of symptoms.