[Prenatal diagnosis of cystic hygroma of the neck by echography. Case report. Review of the literature].

The authors report a case of hygroma colli, diagnosed in utero by ultrasonography, in Africa, at the Brazzaville (Congo) Teaching Hospital. The ultrasonographic appearances as well as the differential diagnostic aspects of hygroma colli are defined. Because of the frequent association with chromosomal aberrations, the authors suggest the termination of pregnancy in an African context, since karyotyping is not possible in that part of the world.