Enlarged Sylvian fissures in infants with interstitial deletion of chromosome 22q11.

Publication/Presentation Date

9-19-1997

Abstract

Two infants with chromosome 22q11 deletion syndrome were noted to have symmetrically enlarged Sylvian fissures on cranial MRI. We compared the size of the Sylvian fissures in neuroimaging studies from 17 other subjects with del 22q11 to age-matched disease controls. The mean anterior interopercular distance was used as an index of Sylvian fissure enlargement. Symmetric enlargement of the Sylvian fissures was present in 10 of 17 subjects with del 22q11. The age-incidence pattern, as well as follow-up scans in 2 patients, suggests delayed growth of the opercular region in these patients. Subjects with del 22q11 consistently had disproportionate enlargement of the left Sylvian fissure compared to the right. This observation suggests that a gene (or genes) in the deleted region affects the development of the left and right perisylvian cortex in different ways. Abnormal development of the operculum may explain some of the neurodevelopmental features that are common among individuals with 22q11 deletion syndrome.

Volume

74

Issue

5

First Page

538

Last Page

543

ISSN

0148-7299

Disciplines

Diagnosis | Medicine and Health Sciences | Other Analytical, Diagnostic and Therapeutic Techniques and Equipment | Radiology

PubMedID

9342208

Department(s)

Department of Radiology and Diagnostic Medical Imaging

Document Type

Article

Share

COinS