[Successive spontaneous dissecting hematomas of both internal carotid arteries with a 3 1/2-year interval between them].

A case of spontaneous dissection of both internal carotid arteries is reported. There was an interval of 3 years and a half between the two dissections. The patient was a 33 year-old female, taking no contraceptives. Among possible favouring factors there was a kinking of both internal carotid arteries at the Cl level and the patient was submitted to cervical manipulations 2 weeks before the second dissection. The usefulness of Doppler ultrasonography to detect and follow the evolution of such lesions is emphasized.