title: Evaluation of clinicopathologic features, response to treatment, and risk factors associated with idiopathic neutropenia in dogs: 11 cases (1990-2002).
abstract: OBJECTIVE
  To evaluate the clinicopathologic features, response to treatment, and risk factors associated with idiopathic neutropenia in dogs.
  
  
  METHODS
  Retrospective case series.
  
  
  METHODS
  11 dogs.
  
  
  METHODS
  Medical records of dogs with idiopathic neutropenia were reviewed. Signalment, history, clinical signs, and response to treatment were recorded and compared with that in dogs with neutropenia attributable to known causes and to dogs without neutropenia (controls).
  
  
  RESULTS
  Compared with dogs with neutropenia attributable to known causes, dogs with idiopathic neutropenia had lower neutrophil counts and were younger. When compared with control dogs, age < 4 years was identified as a risk factor for developing idiopathic neutropenia. In all dogs with idiopathic neutropenia, remission of neutropenia occurred within 18 days after administration of prednisone (2 to 4 mg/kg [0.9 to 1.8 mg/lb], PO, daily) and no serious complications or infections developed.
  
  
  CONCLUSIONS
  An immune-mediated pathogenesis should be considered for dogs with idiopathic neutropenia in which the cause is not known. Severe neutropenia and young age were significantly associated with idiopathic neutropenia in dogs. Prognosis appeared to be excellent with prednisone treatment.
authors.affiliation: Department of Veterinary Clinical Science, School of Veterinary Medicine, Purdue University, West Lafayette, IN 47907, USA.
authors.forename: Cory D
authors.initials: CD
authors.lastname: Brown
authors.forename: Nolie K
authors.initials: NK
authors.lastname: Parnell
authors.forename: Rhonda L
authors.initials: RL
authors.lastname: Schulman
authors.forename: Cassandra G
authors.initials: CG
authors.lastname: Brown
authors.forename: Nita W
authors.initials: NW
authors.lastname: Glickman
authors.forename: Larry
authors.initials: L
authors.lastname: Glickman
mesh_terms: D000367:Age Factors; D000818:Animals; D004283:Dog Diseases / Q000175:diagnosis* / Q000188:drug therapy; D004285:Dogs; D005260:Female; D005938:Glucocorticoids / Q000627:therapeutic use*; D008297:Male; D009503:Neutropenia / Q000175:diagnosis / Q000188:drug therapy / Q000662:veterinary*; D011241:Prednisone / Q000627:therapeutic use*; D011379:Prognosis; D012307:Risk Factors; D016896:Treatment Outcome
chemical_list: D005938:Glucocorticoids; D011241:Prednisone