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Joseph Junewick, MD FACR
over 9 years ago
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Aqueductal Stenosis

Case Detail

Anatomy: Brain-Spine
Joseph Junewick, MD FACR
Diagnostic Category: Developmental or Congenital
Created: over 9 years ago
Updated: over 9 years ago
Tags: PEDS
Modality/Study Types: MR
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Newborn male with macrocephaly.

Case Images


Aqueductal Stenosis


MR – Sagittal T1 and axial and coronal T2 images demonstrate marked lateral ventriculomegaly, mild 3rd ventriculomegaly, abrupt funneling of the posterior 3rd ventricle, absent cerebral aqueduct and nonrecognizable tectal plate.


Aqueductal stenosis may be either congenital or acquired. Acquired causes include intrauterine infection and intraventncular hemorrhage. Congenital causes include X-linked and autosomal recessive disorders. Most cases are considered multifactonal without an identifiable cause. Primary sonographic findings of aqueductal stenosis are dilatation of both lateral and the third ventricles. The degree of ventricular dilatation is usually marked and progressive.


Barkovich AJ and Newton TH. MR of aqueductal stenosis: evidence of a broad spectrum of tectal distortion. AJNR (1989); 10(3):471-476.

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