Neonatal thrombosis.

Neonatal thromboembolic events, both arterial and venous, are rare but increasingly recognised problems in tertiary care neonatology. The pathophysiology of these events in the context of the neonatal haemostatic system and the importance of both inherited and acquired prothrombotic disorders remain poorly defined. Similarly, optimal diagnostic and therapeutic approaches in this setting are not currently based on sound clinical evidence, and there is a clear need to investigate these issues, which will inevitably require large multicentre studies.