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A labral tear is a rip in the labrum, a piece of cartilage within your shoulder socket. It plays a large role in supporting the ball and socket joint as well as various tendons and muscles, including the rotator cuff. The labrum helps keep the shoulder stable and, as a result, labral tears can often result in shoulder dislocation.

Learn more about laceration injuries and laceration treatments at the award-winning Northwell Health.

Lactose intolerance is a condition caused by a lack of an enzyme called lactase, which, in turn, causes the body to be unable to digest lactose, a sugar found in milk and milk products...

Lead is a naturally occurring metal that has been spread through the environment in many ways. Lead used to be in paint and gasoline and can still be found in contaminated soil, household dust, drinking water, lead-glazed pottery and some metal jewelry...

After cancer treatment, you’ll start a new chapter in your life, and we have the resources to help. At Northwell Health Cancer Institute, we're here to support your physical, mental and emotional needs post-treatment and throughout your lifetime.

A limb deformity is characterized by any unnatural form, distortion or irregularity of an arm or leg.

Liver cancer occurs when abnormal cells grow out of control in the liver. Many times the cancer starts at another part of the body, like in the colon or lung, and spreads to the liver. Other times, the cancer starts in the liver.

The National Institutes of Health (NIH) reports that back pain affects eight out of 10 people at one time or another. You may have acute back pain that comes on suddenly and is gone in a few days or a few weeks...

Learn about lumbar decompression surgery and the spine specialists who perform these procedures at Northwell Health.

Learn about rotator cuff repair and the shoulder and elbow specialists who perform these procedures at Northwell Health.

Lung cancer is cancer that usually starts in the lining of the bronchi (the main airways of the lungs), but can also begin in other areas of the respiratory system, including the trachea, bronchioles or alveoli.

Lung cancer occurs when cells in your lungs grow abnormally. The cancer cells can then spread to other parts of your body. Most lung cancer is caused by smoking tobacco.

Lung nodules are small masses of tissue in the lung that appear as spots on an X-ray or CT scan of the chest that may or may not be cancer-causing. With the increase in the use of CT scans, lung nodules are being found with increasing regularity, though people with solitary lung nodules do not usually experience symptoms.

Learn more about lupus causes, symptoms and treatments available at the award-winning Northwell Health.

Lyme disease (LD) is a multistage, multisystem bacterial infection caused by the spirochete Borrelia burgdorferi, a spiral shaped bacterium that is most commonly transmitted by a tick bite...

Lymph node enlargement (lymphadenopathy) in the chest is a frequent finding on X-rays and CT scans. There are many reasons for the enlarged nodes that often depend on the patient's history. Some infections and inflammatory conditions such as sarcoidosis can cause the nodes to be enlarged.

Lynch syndrome is an inherited genetic condition that increases your risk of developing gynecologic and gastrointestinal cancers.