title: Synovial hemangioma in a dog.
abstract: OBJECTIVE
  To report arthroscopic diagnosis and treatment of synovial hemangioma in a dog.
  
  
  METHODS
  Case report.
  
  
  METHODS
  Standard Poodle (8-year-old neutered male).
  
  
  METHODS
  A soft tissue density mass observed radiographically in the left stifle joint of a dog with a 2-month history of recurrent lameness, hemarthrosis, and a slight cranial drawer sign, was located by diagnostic arthroscopy and surgically excised via arthrotomy.
  
  
  RESULTS
  Histologic evaluation revealed tissue composed of variably sized cavernous vascular spaces filled with erythrocytes that were considered compatible with synovial hemangioma.
  
  
  CONCLUSIONS
  In this dog, synovial hemangioma evident as a soft tissue mass on radiographs was associated with chronic lameness and hemarthrosis, and resolved with surgical excision.
  
  
  CONCLUSIONS
  Synovial hemangioma, although seemingly rare in dogs, should be considered in the differential diagnosis for nontraumatic, recurrent lameness, and unresponsive to anti-inflammatory therapy when there is a circumscribed intracapsular soft tissue mass evident radiographically together with hemarthrosis.
authors.affiliation: Facultad de Ciencias Veterinarias, Instituto de Ciencias Clínicas, Universidad Austral de Chile, Valdivia, Chile. joarias@uchile.cl
authors.forename: J Ignacio
authors.initials: JI
authors.lastname: Arias
authors.forename: Cristian
authors.initials: C
authors.lastname: Torres
authors.forename: Daniel
authors.initials: D
authors.lastname: Saez
mesh_terms: D000818:Animals; D004283:Dog Diseases / Q000601:surgery*; D004285:Dogs; D006391:Hemangioma / Q000601:surgery / Q000662:veterinary*; D008297:Male; D012983:Soft Tissue Neoplasms / Q000473:pathology / Q000601:surgery / Q000662:veterinary*; D013264:Stifle / Q000473:pathology / Q000601:surgery; D013583:Synovial Membrane / Q000473:pathology*