Abnormal pinna morphology Macrotia UMLS:C1850189 Median longitudinal ear length greater than two standard deviations above the mean and median ear width greater than two standard deviations above the mean (objective); or, apparent increase in length and width of the pinna (subjective). HP:0001755 UMLS:C1835581 UMLS:C1860838 UMLS:C1855062 SNOMEDCT_US:69056000 SNOMEDCT_US:275480001 HP:0000382 Large pinnae UMLS:C0152421 UMLS:C1848570 HP:0000400 HP:0000401 This is acknowledged to be a bundled term but retained here because of its usefulness in practice. Ear length is determined by the maximal distance from the superior aspect to the inferior aspect of the external ear. If only length is increased the term Long ear should be used. UMLS:C0554972 HP:0000386 big ears increased size of the external ear