Editor—Kerr et al 1 reported two children with Costello syndrome who also had embryonal rhabdomyosarcomas. I report a 14 year boy with Costello syndrome and an alveolar rhabdomyosarcoma.

The baby was born after 35 weeks gestation but weighed 3544 g. Polyhydramnios was present. At birth the infant appeared to be somewhat dysmorphic, was oedematous, and had low set ears. He required a respirator for five days. His oral intake was poor and at the age of 2 weeks he …