In addition to protruding ears, there may be so-called cauliflower ears or small or non-developed auricles, which usually occur sporadically and in a few cases are a pathological correlate such as gestational diabetes or genetic Disposition have.
Depending on the degree of hearing loss, surgical interventions can also help to ensure correct hearing.
https://de.wikipedia.org/wiki/Ohrmuschelfehlbildung (Wikipedia CC-by-sa-3.0)