Hereditary haemorrhagic telangiectasia manifesting as subdural empyema.

Hereditary haemorrhagic telangiectasia (HHT) also known as Osler-Weber-Rendu disease is a rare autosomal dominant condition causing vascular dysplasia. Cerebral abscess formation, secondary to paradoxical septic emboli via HHT-derived pulmonary arteriovenous malformations (pAVMs) in this context is well documented. Herein, we present the first case of subdural empyema with this aetiology.