Dr.Young Cho explains what happens during a tummy tuck procedure, and what he does to get that hourglass shape.

During normal sleep, you cycle through REM and four stages of non-REM (NREM) sleep numerous times a night. Stage 1 of NREM sleep is the lightest, while stage 4 is the deepest. When you're repeatedly interrupted and can't cycle normally through these types and stages of sleep, you may feel tired, fatigued, and have trouble concentrating and paying attention while you're awake. Sleepiness puts you at greater risk for car wrecks and other accidents.

This video demonstrates why ears become clogged and why ear popping helps. The video also explains why ear popping may become difficult resulting in a persistent clogged or muffled ear especially after an ear infection.

In most cases, your body's immune system defeats an HPV infection before it creates warts. When warts do appear, they vary in appearance depending on which variety of HPV is involved: Genital warts. These appear as flat lesions, small cauliflower-like bumps or tiny stem-like protrusions. In women, genital warts appear mostly on the vulva but can also occur near the anus, on the cervix or in the vagina. In men, genital warts appear on the penis and scrotum or around the anus. Genital warts rarely cause discomfort or pain, though they may itch. Common warts. Common warts appear as rough, raised bumps and usually occur on the hands, fingers or elbows. In most cases, common warts are simply unsightly, but they can also be painful or susceptible to injury or bleeding.

An animation showing the general principle of Radiofrequency Ablation of Hepatocellular carcinoma HCC.

This video demonstrates how bronchoscopy and vocal cord mass injections can be performed under endoscopic guidance in a patient without any sedation. Only topical and local anesthesia is used for patient comfort.

The Role of Insulin in the Human Body

A video showing Cool-tipCool-tip(TM) Radiofrequency Ablation System

Video of aortic valve repair surgery

Removal of fibroid with keyhole surgery. A 8cm fibroid is removed from the top of the womb. The womb incision is repaired with laparoscopic suturing using monocryl stitch.

New device claims to stimulate brain for depression treatment

急性坏疽性阑尾炎并穿孔de 腹腔镜手术治疗

surgical examination of intra abdominal lump or mass

This video demonstrates a technique for reducing a dislocated hip. This patient had recurrent dislocations of his artificial hip.

This video: Blisters caused by friction or minor burns do not require a doctor's care. New skin will form underneath the affected area and the fluid is simply absorbed. Do not puncture a blister unless it is large, painful, or likely to be further irritated. The fluid-filled blister keeps the underlying skin clean, which prevents infection and promotes healing.

Minimally Invasive Brain Surgery To Remove Brain Tumors.

Sciatica is often characterized by one or more of the following symptoms: Constant pain in only one side of the buttock or leg (rarely in both legs) Pain that is worse when sitting Leg pain that is often described as burning, tingling, or searing (versus a dull ache) Weakness, numbness, or difficulty moving the leg, foot, and/or toes A sharp pain that may make it difficult to stand up or walk Pain that radiates down the leg and possibly into the foot and toes (it rarely occurs only in the foot) Sciatica Causes and Treatments Video Watch: Sciatica Causes and Treatments Video Sciatic pain can vary from infrequent and irritating to constant and incapacitating. Symptoms are usually based on the location of the pinched nerve. While symptoms can be painful and potentially debilitating, it is rare that permanent sciatic nerve damage (tissue damage) will result, and spinal cord involvement is possible but rare.

Appendicitis is caused by an infected appendix and requires appendectomy surgery. Here's more information on appendicitis and appendectomy.

Splenectomy is a surgical procedure to remove your spleen. The spleen is an organ that sits under your rib cage on the upper left side of your abdomen. It helps fight infection and filters unneeded material, such as old or damaged blood cells. With the da Vinci Surgical System, Dr. Olson operates through just a few small incisions. The da Vinci System features a magnified 3D high-definition vision system and tiny wristed instruments that bend and rotate far greater than the human hand. As a result, da Vinci enables surgeons to operate with enhanced vision, precision and control.