[Antiplatelet therapy can unmask an inherited bleeding disorder. Aspirin-like defect of platelets does not protect against atherosclerosis].

Some inherited platelet disorders may be revealed late, as in the presented case of a 68-year-old-man. Recurrent epistaxis following peri-interventional antiplatelet therapy (after three elective percutaneous coronary interventions) and an episode of upper gastrointestinal haemorrhage required aspirin withdrawal and less frequent clopidogrel use. Platelet studies showed an aspirin-like defect resulting in a lack of arachidonate-induced platelet aggregation.

[Antiphospholipid syndrome--interdisciplinary problem].

Antiphospholipid syndrome (APS) is a systemic autoimmune disorder, where the essence of the matter is the existence of antiphospholipid antibodies. The typical symptoms of APS are: venous thrombo-embolic disease and artery thrombosis in a brain. The authors present 5 patients (2 females and 3 males) at the age of 36-54 with ischemic stroke and one 26-year-old women with thrombosis of central retinal vein caused by APS.