Canine Nasal Disease Study Guide

Overview and Clinical Importance

Nasal disease represents a common yet diagnostically challenging condition in veterinary practice. The canine nasal cavity is a complex structure lined with highly vascular mucosa and delicate turbinate bones that serve crucial respiratory and olfactory functions. Chronic nasal discharge is one of the most frequent presenting complaints, with multiple etiologies including neoplasia, fungal infection (aspergillosis), foreign bodies, inflammatory rhinitis, and dental disease. Understanding the diagnostic approach and key differentiating features of each condition is essential for NAVLE success and clinical practice.

Nasal Anatomy Review

The canine nasal cavity extends from the external nares to the choanae (caudal openings into nasopharynx). The nasal septum divides it into two halves. Key anatomical structures include:

Nasal Turbinates (Conchae)

Dorsal nasal concha: Extends from ethmoid plate to nasal vestibule; longest turbinate