title: Vascular malformations and hypogammaglobulinaemia.
mesh_terms: D000328:Adult; D000361:Agammaglobulinemia / Q000150:complications*; D001808:Blood Vessels / Q000002:abnormalities*; D006801:Humans; D008297:Male; D012878:Skin Neoplasms / Q000276:immunology*