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Echocardiogram
Find out more about this imaging test that uses sound waves to view the heart and heart valves.
Elbow replacement surgery
Elbow replacement surgery can be complicated because of the intricate nature of the joint. Learn about Mayo Clinic's approach.
Electrocardiogram (ECG or EKG)
This common test checks the heartbeat. It can help diagnose heart attacks and heart rhythm disorders such as AFib. Know when an ECG is done.
Electroconvulsive therapy (ECT)
This procedure can greatly and rapidly improve severe symptoms of depression, mania, catatonia or other mental health conditions.
Electromyography (EMG)
Electromyography (EMG) is a procedure used to diagnose muscle or nerve dysfunction. Learn what to expect from your EMG.
Endometrial ablation
This surgery that destroys the lining of the uterus treats unusual uterine bleeding. Learn about the risks and what to expect during the procedure.
Endoscopic mucosal resection
Endoscopic mucosal resection, a procedure to remove abnormal tissue from the lining of the digestive tract, is used for both diagnosis and treatment.
Endoscopic sleeve gastroplasty
This weight-loss procedure is done using a flexible tube passed down through the throat — with no cuts on the outside of the body.
Endoscopic ultrasound
Learn about this imaging test that uses both endoscopy and ultrasound. The test helps diagnose diseases related to digestion and the lungs.
Epilepsy surgery
Surgery may provide relief from epileptic seizures when medications aren't working.
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