[Observations of a case of sirenomelia in a 37-year-old adult].

The authors study a case of sirenomelia at a 37 years old adult woman, nosographic table presented for the first time by Charles Duhamel in 1959, having the denomination of "caudal regression syndrome", similar to Goldenhar syndrome cephalic expression of this regression. The malformation is known and well presented by Greek mythology in Homer (Odissey), Ovide (The Metamorphosis) etc. One presents little enough information, its classification and a few etiopathology data.