Related Experiment Video
Updated: Jun 24, 2026

Echocardiographic Assessment Using Subxiphoid-Only Examination for Hypotensive Patients
Published on: April 18, 2025
Orthostatic hypotension associated with an epidermoid tumor of the IV ventricle
Abstract:
We report the case of a 32-year-old man with an epidermoid tumor of the fourth ventricle. About 14 years later, he showed a tumor recurrence which was removed. After this procedure the patient complained of presyncopal and syncopal crisis while attempting to stand or walk. On examination, severe orthostatic hypotension was confirmed and autonomic tests were abnormal. The brain MRI showed a tetraventricular hydrocephalus predominating in the fourth ventricle. A ventriculo-peritoneal shunt was performed, and after surgery the orthostatic intolerance improved. We believe that hydrocephalus has probably been a contributory factor to orthostatic hypotension, and suggest expanding testing for dysautonomia in patients with hydrocephalus.
Related Concept Videos
Increased Intracranial Pressure ll: Pathophysiology
Increased Intracranial Pressure l: Introduction
Alterations in Blood Pressure
Hypertension (High blood pressure)
Hypertension occurs when blood pressure readings consistently exceed the normal range. It is diagnosed when systolic blood pressure (the top number, indicating pressure while the heart beats)...
Cerebral Edema ll: Pathophysiology
Cerebral Edema l: Introduction
Antihypertensive Drugs: Potassium-Sparing Diuretics