title: Angiolymphoid hyperplasia with eosinophilia developing within a port wine stain.
abstract: A 19-year-old male with a port wine stain on the base of his neck presented with a 5-month history of gradual thickening of the involved skin which interfered with clothing and caused repeated bleeding. The lesion was excised and histopathologic examination revealed angiolymphoid hyperplasia with eosinophilia (ALHE) arising from the pre-existing port wine stain - a rare finding with only one previously reported case. Additionally the lesion was associated with elevated serum renin levels which virtually normalized following excision of the lesion. We further demonstrated the expression of angiotensin converting enzyme and angiotensin II receptors 1 and 2 by the lesion and discuss the possible role of the renin-angiotensin system in this condition.
authors.affiliation: Centre for the Study & Treatment of Vascular Birthmarks, Wellington Regional Plastic, Maxillofacial & Burns Unit, Hutt Hospital, Wellington, New Zealand.
authors.forename: Robert N
authors.initials: RN
authors.lastname: Manton
authors.affiliation: Gillies McIndoe Research Institute, Wellington, New Zealand.
authors.forename: Tinte
authors.initials: T
authors.lastname: Itinteang
authors.affiliation: Gillies McIndoe Research Institute, Wellington, New Zealand.
authors.forename: Sophie
authors.initials: S
authors.lastname: de Jong
authors.affiliation: Gillies McIndoe Research Institute, Wellington, New Zealand.|Department of Pathology, Hutt Hospital, Wellington, New Zealand.
authors.forename: Helen D
authors.initials: HD
authors.lastname: Brasch
authors.affiliation: Centre for the Study & Treatment of Vascular Birthmarks, Wellington Regional Plastic, Maxillofacial & Burns Unit, Hutt Hospital, Wellington, New Zealand.|Gillies McIndoe Research Institute, Wellington, New Zealand.
authors.forename: Swee T
authors.initials: ST
authors.lastname: Tan
mesh_terms: D000796:Angiolymphoid Hyperplasia with Eosinophilia / Q000175:diagnosis* / Q000378:metabolism / Q000601:surgery; D006801:Humans; D008297:Male; D009333:Neck / Q000473:pathology; D007703:Peptidyl-Dipeptidase A / Q000096:biosynthesis; D019339:Port-Wine Stain / Q000175:diagnosis* / Q000378:metabolism / Q000473:pathology* / Q000601:surgery; D044140:Receptor, Angiotensin, Type 1 / Q000096:biosynthesis; D044139:Receptor, Angiotensin, Type 2 / Q000096:biosynthesis; D012083:Renin / Q000097:blood; D055815:Young Adult
chemical_list: D044140:Receptor, Angiotensin, Type 1; D044139:Receptor, Angiotensin, Type 2; D007703:Peptidyl-Dipeptidase A; D012083:Renin
keywords: angiolymphoid hyperplasia with eosinophilia; angiotensin II receptor 1; angiotensin II receptor 2; angiotensin converting enzyme; port wine stain