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Drugs and diseases reference index

Drugs and diseases reference index
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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «L»:

  1. Legg disease Legg disease
    Legg disease: See Legg-Calve-Perthes disease....
  2. Legg-Calve-Perthes disease Legg-Calve-Perthes disease
    Legg-Calvé-Perthes disease: A hip disorder in children due to interruption of the blood supply to the head of the femur (the ball in the ball-and-socket hip joint), causing it to deteriorate. The disease is most common at age 6 to 9, tends to affect boys, but is more severe in girls. It can...
  3. Legg-Perthes disease Legg-Perthes disease
    Legg-Perthes disease: See Legg-Calve-Perthes disease....
  4. Legionella Legionella
    Legionella: The bacterium that causes Legionnaires' disease. This disease is due specifically to the bacterium Legionella pneumophila found in plumbing, shower heads and water-storage tanks. Outbreaks of Legionella pneumonia have been attributed to evaporative condensers and cooling towers. The ...
  5. Legionnaire disease Legionnaire disease
    Legionnaire disease: A disease due to the bacteria Legionella pneumophila found in plumbing, shower heads and water-storage tanks. Outbreaks of Legionella pneumonia have been attributed to evaporative condensers and cooling towers. The bacteria thrives in the mist sprayed from air-conditioning ...
  6. Leigh's disease Leigh's disease
    Leigh's disease: A rare genetic disorder characterized by progressive damage to the central nervous system. Leigh's disease is caused by a defect in the function of mitochondria within the cells of the body. Symptoms begin in infancy and include poor sucking ability, the loss of head control and mot...
  7. Leiomyoma Leiomyoma
    Leiomyoma: A benign tumor of smooth muscle, the type of muscle that is found in the heart and uterus. A leiomyoma of the uterus is commonly called a fibroid. Uterine fibroids are the single most common indication for hysterectomy. Fibroids can be present and be inapparent. However, they are clinica...
  8. Leiomyosarcoma Leiomyosarcoma
    Leiomyosarcoma: A malignant tumor of smooth muscle origin. Smooth muscle is the major structural component of most hollow internal organs and the walls of blood vessels. Can occur almost anywhere in the body but is most frequent in the uterus and gastrointestinal tract. Complete surgical excision, i...
  9. Leishmania Leishmania
    Leishmania: A group of parasites causing a disease called leishmaniasis. For a fuller definition and more information, see Leishmania infection....
  10. Leishmania infection Leishmania infection
    Leishmania infection: A parasitic disease, also called leishmaniasis, spread by the bite of sand flies infected with a protozoa (Leishmania). There are several forms of leishmaniasis, the most common being cutaneous and visceral leishmaniasis. The cutaneous form of the disease causes skin sores whil...
  11. Leishmaniasis Leishmaniasis
    Leishmaniasis: Diseases due to the parasite called Leishmania involving the organs (kala-azar) or the skin plus mucous membranes (espundia), or the skin alone (usually named for the place plus boil, button or sore as, for example, Jericho boil, Bagdad button, Delhi sore). For a fuller definition and...
  12. Leishmaniasis, visceral Leishmaniasis, visceral
    Leishmaniasis, visceral: See: Visceral leishmaniasis....
  13. Lemierre syndrome Lemierre syndrome
    Lemierre syndrome: A potentially lethal form of sore throat caused by the bacterium Fusobacterium necrophorum, a common inhabitant of the mouth. This disease vanished with the advent of antibiotics but then returned decades later. It has been called the "forgotten disease." Lemierre syndrome de...
  14. Lenin Lenin
    Lenin: (1870-1924) Vladimir Ilyich Lenin, the founder of the Bolshevik Party and the Soviet state. Lenin is of some medical interest because he has been retrospectively diagnosed with syphilis. Lenin may have contracted the disease in Europe years before he led the October Revolution in 1917 and the...
  15. Lennox syndrome Lennox syndrome
    Lennox syndrome: A severe form of epilepsy that is characterized by the onset in early childhood of frequent seizures of multiple types, developmental delay, a particular brain wave pattern (a slow spike-and-wave pattern), and behavioral disturbances with poor social skills and attention-seeking beh...