Wiskott‐Aldrich Syndrome Caused by a New Mutation Associated with Multifocal Dermal Juvenile Xanthogranulomas

Wiskott‐ A ldrich syndrome is a rare X ‐linked primary immunodeficiency clinically characterized by the triad of microthrombocytopenia, immunodeficiency, and eczema. Juvenile xanthogranuloma is a well‐recognized benign disorder of infancy and early childhood from the group of non‐ L angerhans cell histiocytoses, with a good prognosis and spontaneous involution. We report a boy with W iskott‐ A ldrich syndrome caused by a new, not previously described mutation associated with multifocal juvenile xanthogranuloma.