[Splenic infarct in heterozygote sickle cell trait (Hb AS)].

We present a carrier of the sickle cell trait who developed a serious splenic infarction. An antecedent hypoxaemic event and a blood coagulation disorder were ruled out. The observation shows that the sickle cell trait can represent a risk factor for a life-threatening thrombotic event, even in the absence of a predisposing condition.