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Abstract

CT and MR of the brain in glutaric acidemia type I: a review of 59 published cases and a report of 5 new patients.

J Brismar and P T Ozand
American Journal of Neuroradiology April 1995, 16 (4) 675-683;
J Brismar
Department of Diagnostic Radiology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia.
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P T Ozand
Department of Diagnostic Radiology, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia.
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Abstract

PURPOSE To identify a pattern of findings on CT or MR of the brain in glutaric acidemia type I typical enough to permit a correct diagnosis.

METHODS Clinical history and findings and brain CT and MR results in 59 previously reported patients (MR in 12) and in 5 new patients (all examined with MR and 3 also with CT) were reviewed.

RESULTS In half the patients macrocephaly was present, and in half the onset was acute, often following infection and mimicking encephalitis. Although brain atrophy or hypoplasia was found in 61% and white matter changes in 51% of the patients, open opercula (usually very widely open) and often also wide cerebrospinal fluid spaces anterior to the temporal lobes were seen in 93%. Basal ganglia lesions, presenting as volume loss and high T2 signal in the caudate head and often also the lentiform nucleus bilaterally, were found in 44% and extracerebral fluid collections in 7 of 64 patients.

CONCLUSION The finding of very widely open opercula suggests glutaric acidemia type I, and if combined with basal ganglia lesions is almost pathognomonic, especially in a child with macrocephaly.

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American Journal of Neuroradiology
Vol. 16, Issue 4
1 Apr 1995
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CT and MR of the brain in glutaric acidemia type I: a review of 59 published cases and a report of 5 new patients.
J Brismar, P T Ozand
American Journal of Neuroradiology Apr 1995, 16 (4) 675-683;

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CT and MR of the brain in glutaric acidemia type I: a review of 59 published cases and a report of 5 new patients.
J Brismar, P T Ozand
American Journal of Neuroradiology Apr 1995, 16 (4) 675-683;
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