Intraventricular colloid cyst, hydrocephalus and neurogenic stunned myocardium

The sudden elevation of intracranial pressure, with the subsequent decreased cerebral perfusion pressure induces a vigorous cerebro-protective neuroendocrine system activation that can lead to the neurogenic stunned myocardium. Sudden death in patients with colloid cysts may be related to acute neurogenic cardiac dysfunction, and not necessarily cerebral herniation(s), as previously thought.