Duret hemorrhage is a small haemorrhage (or multiple haemorrhages) seen in the medulla or pons of patients who are rapidly herniating.

Raised intracranial pressure causes the brainstem and mesial temporal lobes to be forced downwards through the tentorial hiatus. As a result of this shift, it is believed that perforating branches from the basilar artery and/or draining veins are damaged with resultant parenchymal haemorrhage. Usually it is seen in patients with severe herniation for 12-24 hours prior to death ¹⁾.

Bermúdez et al. report a case of Duret haemorrhage with full recovery ²⁾.