[Skip to Content]
Access to paid content on this site is currently suspended due to excessive activity being detected from your IP address 54.163.159.27. Please contact the publisher to request reinstatement.
[Skip to Content Landing]
Article
September 1989

Heterotropic Brain Tissue Presenting as Bald Cysts With a Collar of Hypertrophic HairThe `Hair Collar' Sign

Author Affiliations

From the Skin and Cancer Foundation (Dr Commens), Westmead, Australia; and the Royal Alexandra Hospital for Children (Drs Rogers and Kan), Camperdown, Australia.

Arch Dermatol. 1989;125(9):1253-1256. doi:10.1001/archderm.1989.01670210091015
Abstract

• We report the cases of two children who were each noted at birth to have a single bald compressible nodule on the scalp that was surrounded by a collar of hypertrophic hair. One of the mothers had taken doxylamine succinate during pregnancy. Extensive investigations and, finally, surgery revealed that the lesions were heterotropic brain tissue without connection to the brain. Encephaloceles may also have a "hair collar." The presence of a hair collar around any cutaneous lesion should alert the clinician to the possibility of a neuroectodermal defect. All procedures on these lesions should be delayed until appropriate investigations have excluded any connection with the underlying nervous system.

(Arch Dermatol. 1989;125:1253-1256)

×