title: Algorithm for evaluation of pulsatile tinnitus.
abstract: CONCLUSIONS
  Pulsatile tinnitus requires a careful physical examination and evaluation with selected imaging techniques to identify the origin of the symptoms.
  
  
  OBJECTIVE
  To evaluate the incidence of identifiable anomalies in patients with pulsatile tinnitus.
  
  
  METHODS
  This was a retrospective chart review undertaken in a tertiary care center. Patients seen in the outpatient otolaryngology clinic with the chief complaint of pulsatile tinnitus were evaluated by physical examination and imaging including CT angiography. The outcome measure was the incidence of identifiable abnormalities on imaging studies.
  
  
  RESULTS
  Fifty-four patients were seen between January 2002 and June 2007 with the chief complaint of constant pulsatile tinnitus, excluding those with chemodectomas. On the basis of physical examination and imaging, 14 were considered arterial, 23 venous, and 15 were indeterminate in origin. Among patients with venous tinnitus, sigmoid sinus diverticulum was the most common finding. Among patients with arterial tinnitus, carotid atherosclerotic disease was the most common. One patient had erosion of the cochlea by the carotid artery. Non-vascular entities identified include superior semicircular canal dehiscence and benign intracranial hypertension.
authors: Department of Otolaryngology - Head & Neck Surgery, Emory University School of Medicine, Atlanta, GA 30322, USA. douglas.mattox@emory.edu
authors: Douglas E
authors: DE
authors: Mattox
authors: Patricia
authors: P
authors: Hudgins
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000465:Algorithms; D000792:Angiography / Q000379:methods*; D001299:Audiometry / Q000379:methods*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging / Q000379:methods*; D008297:Male; D008875:Middle Aged; D015203:Reproducibility of Results; D012189:Retrospective Studies; D014012:Tinnitus / Q000175:diagnosis* / Q000503:physiopathology; D014057:Tomography, X-Ray Computed