title: Congenital pseudoclubbing of a fingernail caused by subungual hemangioma.
abstract: BACKGROUND
  Nail dystrophies in newborns are rare and are particularly frightening when they appear as masses involving a single digit, suggesting the possibility of a tumor.
  
  
  OBJECTIVE
  The aim of this study is to report 3 infants with a congenital pseudoclubbing appearance of a digit and with a reddish discoloration caused by the presence of a subungual hemangioma.
  
  
  METHODS
  Diagnosis was based on clinical examination and ultrasonography.
  
  
  RESULTS
  Clinical presentation and vitrocompression showed the presence of a vascular mass. Ultrasonography confirmed the diagnosis of a subungual hemangioma. The lesions showed a spontaneous regression on follow-up.
  
  
  CONCLUSIONS
  Localization of hemangioma under the proximal nailfold is extremely rare and produces nail pseudoclubbing caused by capillary vessel proliferation in the soft tissue of the subungual region, which is associated with a reddish discoloration of the nail that typically fades with compression. Hemangiomas of infancy located in the proximal nailfold are rare, and, in our opinion, not at risk to become big masses with tissue damage and compression.
authors: Department of Dermatology, University of Bologna, Bologna, Italy. bmpiracc@med.unibo.it
authors: Bianca Maria
authors: BM
authors: Piraccini
authors: Angela
authors: A
authors: Antonucci
authors: Giulia
authors: G
authors: Rech
authors: Matilde
authors: M
authors: Iorizzo
authors: Iria
authors: I
authors: Neri
authors: Annalisa
authors: A
authors: Patrizi
authors: Antonella
authors: A
authors: Tosti
mesh_terms: D005260:Female; D006391:Hemangioma / Q000150:complications / Q000151:congenital* / Q000175:diagnosis; D006801:Humans; D007223:Infant; D008297:Male; D009260:Nail Diseases / Q000151:congenital* / Q000209:etiology*; D012878:Skin Neoplasms / Q000150:complications / Q000151:congenital* / Q000175:diagnosis