[Incidence of hydatidiform mole at the Paulista Medical School]

Between January 1980 and December 1989, at Escola Paulista de Medicina, a referral centre, 75 patients with hydatiform mole were assisted. The frequency of the hydatiform mole was calculated in 65 patients, whose treatment was performed in our Hospital, out of 13,986 pregnancies, which had occurred in this period of study. Thus, the incidence was 1:215 pregnancies, similar to that found in Asian and African countries.