Use of a frameless computed tomography-guided stereotactic biopsy system for nasal biopsy in five dogs.

Case Description: 5 dogs (median age, 9 years; median body weight, 31 kg [68.2 lb]) with undefined nasal masses were examined after undergoing CT of the head and nasal biopsy via a rostral rhinoscopic or unaided (blind) approach because histologic results for collected biopsy specimens (inflammatory, necrotic, or hemorrhagic disease) suggested the specimens were nonrepresentative of the underlying disease process identified via CT (aggressive or malignant disease).

Clinical Findings: Clinical signs at the time dogs were evaluated included open-mouth breathing, sneezing, or unilateral epistaxis.