A condition whereby either the spinal canal (central stenosis) or vertebral foramen (foraminal stenosis) becomes narrowed, leading to compression of the spinal nerves. Symptoms are pain in the lower back and weakness, numbness, pain, and loss of sensation in the legs. The most common cause of lumbar spinal stenosis is degenerative arthritis (osteoarthritis), but other causes can include tumor, infection, and various metabolic bone disorders. Treatment may involve anti-inflammatory medications, corticosteroids, medications to treat nerve pain, physical therapy, and in severe cases, surgery. Also referred to as lumbar stenosis, or spinal stenosis. Spinal stenosis frequently responds to exercise.
- Lumbar strain
A stretching injury to the ligaments, tendons, and/or muscles of the low back. The stretching incident results in microscopic tears of varying degrees in these tissues. Lumbar strain is one of the most common causes of low back pain. The injury can occur because of overuse, improper use, or trauma. It is classified as “acute” […]
- Lumbar vertebrae
The five vertebrae situated between the thoracic vertebrae and the sacral vertebrae in the spinal column. The lumbar vertebrae are represented by the symbols L1 through L5.
A luminous term referring to the channel within a tube such as a blood vessel or to the cavity within a hollow organ such as the intestine. Lumen is a luminous term because it is Latin for light, including the light that comes through a window. When a hollow organ is cut across, you can […]
The surgical removal of a small tumor, which may be benign or cancerous. In common use, lumpectomy refers especially to removal of a lump from the breast. Lumpectomy, often with chemotherapy or radiation therapy, can be an alternative to mastectomy in cases of nonmetastatic breast cancer.
- Lung cancer, familial
Lung cancer that recurs in families. Lung cancer can occur sporadically in people with no known family history of lung cancer or it can recur in two or more members of the same family and constitute familial lung cancer. A gene for familial lung cancer is on the long (q) arm of chromosome 6 in […]