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Tag: Ashkenazi jewish

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Unraveling the Clinical Picture: What is the most common presentation of factor XI deficiency?

5 min read
While severe Factor XI deficiency affects approximately 1 in 1 million people worldwide, its most common presentation is not spontaneous bleeding, but rather delayed or prolonged bleeding following a hemostatic challenge like surgery or trauma. The clinical picture is often unpredictable and does not correlate reliably with the patient's measured factor XI levels.