Browse our Health Library to learn about treatments, conditions, and how Cedars-Sinai can support your healthcare needs.

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Lichen Planus

Lichen planus is a common disease that causes inflammation (swelling and irritation) on your skin or inside your mouth. On your skin, lichen planus causes a rash that is usually itchy. Inside your mouth, it may cause burning or soreness.

Lichen Sclerosus

Lichen sclerosus is a long-term (chronic) skin condition. It causes the skin to become thin, white, and wrinkly.

Liposarcoma

A liposarcoma is a rare type of cancer that develops in your fatty tissue. This type of tumor can grow anywhere in your body. Common places include your abdomen, thigh, and behind your knee.

Liposuction

Liposuction is a cosmetic procedure in which fat is sucked out of the body. It helps reshape areas of the body that are out of proportion to the rest of the body.

Lisfranc Joint Injury

A Lisfranc joint injury is a type of injury to the bones or ligaments in the middle part of your foot. In this type of injury, there also is usually damage to the cartilage covering these bones.

Lithotripsy

Lithotripsy is a procedure used to treat kidney stones that are too large to pass through the urinary tract. It works by sending focused ultrasound energy or shock waves directly to the stone. The shock waves break a large stone into ...

Liver Biopsy

A liver biopsy is a test used to diagnose liver conditions. Tissue samples are removed from your liver and checked under a microscope for signs of damage or disease.

Liver Cancer (Metastatic)

Metastatic liver cancer is a cancer that started somewhere else in the body and has spread to the liver. This type of cancer most commonly starts in the lung, breast, large intestine, pancreas or stomach. Leukemia and lymphoma may also ...

Liver Cancer (Primary)

Primary liver cancers begin in the liver. The various types include cholangiocarcinoma, hepatoblastoma, and angiosarcoma. Signs of primary liver cancers are often vague.

Liver Cancer Overview

Liver cancer is cancer that starts in your liver. There are different kinds of liver cancer, but the most common type in adults is called hepatocellular carcinoma. Learn more about symptoms, diagnosis, and treatments.

Liver Scan

A liver scan is an imaging test to look at your liver and see how well it is working. This test may also be called a liver-spleen scan because the healthcare provider often looks at the spleen at the same time.

Liver Transplant

A liver transplant is surgery to replace a diseased liver with a healthy liver from another person. A whole liver may be transplanted, or just part of one.

Lobectomy

A lobectomy is a surgery to remove one of the lobes of the lungs.

Lobular Carcinoma in Situ (LCIS)

Lobular carcinoma in situ (LCIS), also known as lobular neoplasia, is a rare condition in which abnormal cells develop in the milk glands, known as lobules, in the breast. These abnormal cells are not considered to be breast cancer and ...

Loeys-Dietz Syndrome (LDS)

Loeys-Dietz syndrome (LDS) is a disorder that affects the connective tissues of the body and increases the patient's risk of aneurysms in arteries such as the aorta. This condition is rare and was only recently identified as a condition ...

Long QT Syndrome

Long QT syndrome can cause life-threatening rapid heart rhythms that can lead to fainting or sudden death.

Loop Electrosurgical Excision Procedure (LEEP)

Loop electrosurgical excision procedure (LEEP) uses a wire loop heated by electric current to remove cells and tissue in a woman’s lower genital tract. It is used as part of the diagnosis and treatment for abnormal or cancerous conditions.

Loop Recorder Implantation

An implantable loop recorder (ILR) is a device that helps the heart. The machine works as an electrocardiogram (ECG), constantly picking up electrical signals from your heart.

Lordosis in Children

Lordosis is a deformity of the backbone (spine). It's when the bones of the spine (vertebrae) in the lower back curve inward more than normal.

Low Back Pain

Everyone has experienced low back pain at one time or another. Most people can recover from low back pain with home treatment, such as changes in activity, weight loss, quitting smoking, and other steps. Sometimes medicine or surgery is ...

Low Birth Weight

Low birth weight is a term used to describe babies who are born weighing less than 5 pounds, 8 ounces (2,500 grams). An average newborn usually weighs about 8 pounds. A low-birth-weight baby may be healthy even though he or she is small....

Lumbar Disk Disease (Herniated Disk)

Lumbar disk disease occurs when the spongy disks between the vertebrae bulge out or rupture.

Lumbar Disk Replacement

A lumbar disk replacement involves replacing a worn or degenerated disk in the lower part of the spine with an artificial replacement made of metal or a combination of metal and plastic.

Lumbar Fusions

Anterior lumbar interbody fusion is a surgical approach done from the front of the body to remove a herniated or degenerated disc in the lower back. The procedure is done through an incision on the abdomen with the abdominal muscles ...

Lumbar Puncture

A lumbar puncture (LP) or spinal tap may be done to diagnose or treat a condition.

Lumbar Spinal Stenosis

Lumbar spinal stenosis is a narrowing of the spinal canal in your lower back that may cause pain or numbness in your legs. Read on for details about causes, symptoms, diagnosis, and treatment.

Lumbar Spine

The lumbar spine is the lower back. It is made up of five or six vertebrae, depending on the individual. (The extra bone does not make a difference to one's health.) The vertebrae in the lumbar spine area are the largest of the entire ...

Lumbar Strain

A lumbar strain is an injury to the lower back. This results in damaged tendons and muscles that spasm and feel sore.

Lumbar Sympathetic Nerve Block

A lumbar sympathetic nerve block is a type of injection that eases pain. It's used for a variety of conditions that cause pain in your legs and feet."

Lumpectomy or Partial Mastectomy

Lumpectomy is a type of surgery that removes a lump and leaves as much normal breast tissue as possible. During the surgery, the breast cancer and some normal tissue around it is removed. This treatment is also known as a segmental or ...

Showing 31 - 60 of 75 results.
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