Severe proteus syndrome in an 18‐month‐old boy

Abstract
We describe an 18‐month‐old Greek boy with macrocephaly, partial gigantism of hands and feet, hemihypertrophy, pigmented nevi, and other anomalies compatible with the Proteus syndrome. Cerebral involvement in a most severe form and at an early age concurs with the suggestion that encephalocraniocutaneous lipomatosis may represent a more circumscriptive manifestation of Proteus syndrome. Localized triggering of several growth factors is a challenging pathogenetic consideration of the syndrome.