[Protein C deficiency and the P pill].

A 18-year old woman was hospitalized because of vena cava inferior thrombosis, renal vein thrombosis and pulmonary embolism due to inherited protein C deficiency and three months of contraceptive treatment with oestrogen hormones. Protein deficiency was detected in 12 other members of the family. The father had had a pulmonary embolism 12 years earlier, and two other members may have died of thromboembolism.