title: Aplasia of the first and second branchial arches.
mesh_terms: D000015:Abnormalities, Multiple / Q000175:diagnosis*; D000328:Adult; D004423:Ear / Q000002:abnormalities; D005260:Female; D006801:Humans; D011247:Pregnancy; D012886:Skull / Q000002:abnormalities; D013577:Syndrome