<unk>  are named after Henri<unk> , who discovered these brainstem lesions in dogs with increased intracranial pressure. They are small linear areas of bleeding in the midbrain and upper pons of the brainstem. They are caused by a traumatic downward displacement of the brainstem with parahippocampal gyrus herniation through the tentorial notch. or acute hematoma, edema following trauma, abscess, or tumor.
Duret haemorrhages
Splinter hemorrhage
Cavernous sinus thrombosis
Pseudoaneurysm
Cerebral venous sinus thrombosis
Pseudosubarachnoid hemorrhage
Vitreous hemorrhage
Cirsoid aneurysm