Abnormality of the philtrum Malaligned philtral ridges 2012-05-01T10:35:32Z Hajnis [1972] has described downwards convergent, downwards divergent (trapezoid or triangular), convex (ovoid), and concave philtral configurations. Any of these findings may be coded using this term. Malaligned philtral columns Asymmetric philtral columns Philtral Ridges, Malaligned HP:0011827 UMLS:C4021117 Asymmetric philtral ridges Absence of the usual parallel position of philtral ridges.