Neuroglial heterotopia of the scalp

摘要

Glial heterotopias are rare, benign congenital lesions, corresponding to the presence of extra cranial ectopic brain tissue without connection to the central nervous system. His pathogenesis is still unclear. They result from abnormal extra cranial sequestration of neural tissue during the embryogenesis. These malformative lesions mostly occur in childhood, before the first year and are often located at the nose. The location at the scalp is rare. Only 13 cases of scalp localized lesions are reported in the English medical literature. We report a rare case of glial heterotopia of the scalp, discovered incidentally in a 50 year-old man.