[Does oral contraception cause deep venous thromboses? (author's transl)].

From 1975 to 1980 48 women suffering from deep venous thrombosis were seen at the Surgical Dept. of the Medizinische Akademie Magdeburg. In 22 cases no objective cause could be found, 16 women, however, had been put under oral contraceptives for many months and even for years. Although there is no causal evidence between oral contraception and deep venous thrombosis until now, oral contraception has to be considered as a risk factor concerning the formation of deep venous thrombi in women.