title: A challenging hernia: primary venous aneurysm of the proximal saphenous vein.
abstract: BACKGROUND
  Primary venous aneurysm is a rare, but essential consideration in the differential diagnosis of an inguinal and femoral hernia.
  
  
  METHODS
  We report a case of a 43-year-old man who was referred for evaluation and treatment of a femoral hernia.
  
  
  RESULTS
  The patient presented with a 3-month history of an asymptomatic tumor on his right upper inner thigh. Physical examination noted a non-tender, non-indurated tumor.
  
  
  CONCLUSIONS
  Surgical exploration demonstrated a primary venous aneurysm of the proximal saphenous vein.
authors.affiliation: Department of Visceral and Transplantation Surgery, University Hospital of Zurich, Raemistrasse 100, 8091, Zurich, Switzerland.
authors.forename: Ch
authors.initials: Ch
authors.lastname: Tschuor
authors.forename: D
authors.initials: D
authors.lastname: Dindo
authors.forename: P-A
authors.initials: PA
authors.lastname: Clavien
authors.forename: D
authors.initials: D
authors.lastname: Hahnloser
mesh_terms: D000328:Adult; D000783:Aneurysm / Q000175:diagnosis* / Q000601:surgery; D003937:Diagnosis, Differential; D006550:Hernia, Femoral / Q000175:diagnosis*; D006552:Hernia, Inguinal / Q000175:diagnosis*; D006801:Humans; D008297:Male; D012501:Saphenous Vein