Syndromes?

Question 1

What is Treacher Collins syndrome? What causes it?

Answer 1

It is caused by a defect in the 1st branchial arch&raquo_space; malformation of the muscles of mastication (temporalis, masseter, lat pterygoid, med pterygoid) and the mylohyoid, ant belly of digastric, tensor tympani, and tensor veli palatini.