[Intrauterine death of one fetus in twin pregnancy].

A case of twin pregnancy complicated by intrauterine death of a foetus is reported. The most recent literature data on incidence, aetiology, diagnostic and monitoring difficulties (improved over the past few years thanks to echography) are discussed. Finally, prevention problems and the choice of therapy are examined, it being stressed that it is by now a widespread habit to close these pregnancies with Caesarean section as soon as the maturity of the surviving twin so permits.