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[Coagulation factor XII deficiency, a contribution to thrombophilia]
The hereditary deficiency of Hageman's factor rarely occurs. The patients are mostly detected by chance. The leading symptom is the considerably prolonged partial thromboplastin time. A haemorrhagic diathesis is not present. Since in these patients thromboemoblic diseases are possible, in an ascertained diagnosis the prevention of thrombosis should be performed.
The hereditary deficiency of Hageman's factor rarely occurs. The patients are mostly detected by chance. The leading symptom is the considerably prolonged partial thromboplastin time. A haemorrhagic diathesis is not present. Since in these patients thromboemoblic diseases are possible, in an ascertained diagnosis the prevention of thrombosis should be performed.