Figure 2
From: Measurement tools for the diagnosis of nasal septal deviation: a systematic review
Areas of the nasal cavity according to Cottle. Area 1: nostril. Area 2:nasal valve. Area 3: area underneath the bony and cartilaginous vault, also called the attic. Area 4: anterior aspect of the nasal cavity including the heads of the turbinates and the infundibulum. Area 5: the posterior aspect of the nasal cavity, including the tails of the turbinates. (Adapted from Egbert H et al. Incorrect terminology in nasal anatomy and surgery, suggestions for improvement. Rhinology, 2003; 41:129-133).