Advanced

AJNR - American Journal of Neuroradiology

This Article Figures Only Full Text Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Citing Articles Citing Articles via CrossRef Citing Articles via Google Scholar Google Scholar Articles by Biega, T.J. Articles by Vezina, G. Search for Related Content PubMed PubMed Citation Articles by Biega, T.J. Articles by Vezina, G.

American Journal of Neuroradiology 28:392-393, February 2007
© 2007 American Society of Neuroradiology

Case Report
PEDIATRICS

Isolated Absence of the Optic Chiasm: A Rare Cause of Congenital Nystagmus

T.J. Biega^a, Z.P. Khademian^b and G. Vezina^b

^a Department of Neuroradiology, George Washington University Medical Center, Washington, DC
^b Department of Radiology, Children’s National Medical Center, Washington, DC

Please address correspondence to: Zarir P. Khademian, MD, Children’s National Medical Center-Radiology, 111 Michigan Ave, NW, Washington, DC 20010-2970; e-mail: khademian{at}earthlink.net

SUMMARY: The cases presented are rare examples of congenital nystagmus associated with isolated absence of the optic chiasm. MR imaging in both patients demonstrated unremarkable anterior optic pathways and optic tracts. No additional midline central nervous system abnormalities, migrational anomalies, space-occupying lesions, or destructive processes were noted. These cases demonstrate that the achiasmatic syndrome should be included in the differential diagnosis of congenital nystagmus and may be overlooked without careful MR imaging evaluation.