Type of Surgery


Doctor Certified

Last updated: 11/24/2009


Hemorrhage during or after surgery is a risk for hemispherectomy. Disseminated intravascular coagulation, or blood clotting within the circulatory system, is a risk that may be managed with anticoagulant drugs. "Aseptic meningitis," an inflammation...

of the brain's covering without infection, may occur. Hydrocephalus, or increased fluid pressure within the remaining brain, may occur in 20–30% of patients. Death from surgery is a risk that has decreased as surgical techniques have improved, but it still occurs in approximately 2% of patients.

The patient will lose any remaining sensation or muscle control in the extremities on the side opposite the removed hemisphere. However, upper arm and thigh movements may be retained, allowing adapted function with these parts of the body.



The body's ability to maintain balance and purposeful movement depends on complex processes. This narrated animation explains how the brain and inner ear structures work together to maintain balance and proper orientation of the body.

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Other Information

Hemispherectomy is a surgical procedure where one cerebral hemisphere (half of the brain) is removed or disabled. This procedure is used to treat a variety of seizure disorders where the source of the epilepsy is localized to a broad area of a single hemisphere of the brain. It is solely reserved for extreme cases in which the seizures have not responded to medications and other less invasive surgeries.

From http://en.wikipedia.org/wiki/Hemispherectomy

Other Information

Surgery for removal is generally advised for patients with limited cancer elsewhere in the body and a single brain metastasis.


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