Fig. 7
From: Intracranial emergencies in neurosurgical oncology: pathophysiology and clinical management
Fourth ventricle hydrocephalus. This is a patient with lymphoma and associated leptomeningeal dissemination who presented first with headache, followed by apnea, coma, and quadriplegia (after resuscitation). The patient was treated with a ventriculoperitoneal shunt to drain the fourth ventricle and relieve pontomedullary compression