"absence of the external ear with a small deformed vestigial structure with no recognisable features."
"slightly smaller ear than normal (>2 SD below mean)"
"small l (>2 SD below mean)"
Expected headings
"Associations"
"A number of classification of microtia have been described 6-10. The classification proposed by Weerda in 1998 9, which is built upon earlier classifications by Marx 10, Rogers and Tanzer, is probably most widely used, and divides microtia into three grades based on increasing severity 9:"