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AJNR Am J Neuroradiol. 2011 Feb;32(2):E23-5. doi: 10.3174/ajnr.A1969. Epub 2010 Jan 14.

Bilateral complete labyrinthine aplasia with bilateral internal carotid artery aplasia, developmental delay, and gaze abnormalities: a presumptive case of a rare HOXA1 mutation syndrome.

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  • 1Department of Radiology, Phoenix Children's Hospital, Arizona 85016, USA.


The human HOXA1 mutation syndromes commonly present with abnormalities of the inner ear and ICAs. Previous cases describe varying degrees of hypoplasia or aplasia of the affected structures, often with asymmetric involvement. We present imaging findings documenting complete absence of the ICAs bilaterally with bilateral CLA, which, to our knowledge, has not been previously reported.

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