The geometry of alar base resection.
There are many types of alar base excisions. However, analysis of the nostril circumference into the columella, nostril sill, and the alar flare (the ovoid subset of the alar base esthetic unit) is critical in assessing the location and amount of circumference reduction in alar base excisions.
D006801:Humans; D012225:Rhinoplasty / Q000379:methods*