title: Hobnail Hemangioma (Superficial Hemosiderotic Lymphovascular Malformation) in Children: A Series of 6 Pediatric Cases and Review of the Literature.
abstract: BACKGROUND
  Hobnail hemangioma is a small benign vascular malformation of the superficial and mid-dermis with variable clinical presentation.
  
  
  OBJECTIVE
  To review the clinical characteristics of hobnail hemangioma in pediatric patients.
  
  
  METHODS
  A retrospective chart review performed of all histopathologically confirmed cases of hobnail hemangioma from May 2000 to December 2014. Data on demographics, clinical characteristics, and results of immunohistochemical staining were collected.
  
  
  RESULTS
  Four male and 2 female patients identified. Congenital lesions were reported in 3 cases. The most common anatomic location was the extremities. Treatment options included observation and surgical excision.
  
  
  CONCLUSIONS
  Hobnail hemangioma is an uncommon benign vascular malformation. Due to its benign nature, treatment is not required. If treatment is indicated, complete surgical excision appears to be the most effective option.
authors.affiliation: Division of Pediatric Dermatology, Hospital for Sick Kids, Toronto, Canada derm.moe@gmail.com.
authors.forename: Mohn'd
authors.initials: M
authors.lastname: AbuHilal
authors.affiliation: Division of Pediatric Dermatology, Hospital for Sick Kids, Toronto, Canada.
authors.forename: Max
authors.initials: M
authors.lastname: Breslavet
authors.affiliation: Division of Pediatric Dermatology, Hospital for Sick Kids, Toronto, Canada.
authors.forename: Nhung
authors.initials: N
authors.lastname: Ho
authors.affiliation: Department of Pathology, Hospital for Sick Kids, Toronto, Canada.
authors.forename: Glenn
authors.initials: G
authors.lastname: Taylor
authors.affiliation: Division of Pediatric Dermatology, Hospital for Sick Kids, Toronto, Canada.
authors.forename: Elena
authors.initials: E
authors.lastname: Pope
mesh_terms: D000293:Adolescent; D058846:Antibodies, Monoclonal, Murine-Derived / Q000032:analysis; D002648:Child; D005260:Female; D051272:Glucose Transporter Type 1 / Q000032:analysis; D006391:Hemangioma / Q000737:chemistry* / Q000175:diagnosis* / Q000473:pathology; D006801:Humans; D008297:Male; D019408:Platelet Endothelial Cell Adhesion Molecule-1 / Q000032:analysis; D012878:Skin Neoplasms / Q000737:chemistry* / Q000175:diagnosis* / Q000473:pathology; D025721:WT1 Proteins / Q000032:analysis
chemical_list: D058846:Antibodies, Monoclonal, Murine-Derived; D051272:Glucose Transporter Type 1; D019408:Platelet Endothelial Cell Adhesion Molecule-1; D025721:WT1 Proteins; C583751:WT1 protein, human; C500987:monoclonal antibody D2-40
keywords: hobnail hemangioma; superficial hemosiderotic lymphovascular malformation; targetoid hemosiderotic hemangioma