Category: L

  • Lewy body

    An unusual deposit of protein in neurons in the brain. A neuronal cell with pigmented inclusion bodies. They are found in the brain in the substantia nigra and locus ceruleus, especially in Parkinson’s disease.  

  • Levonorgestrel

    An artificially produced female sex hormone, used mostly in birth control pills or capsules. An oral contraceptive; birth control pill. Together with ethinyl estradiol, levonorgestrel combines natural or synthetic estrogens and progestins that are similar to the natural sex hormones produced in a woman’s body. Ethinyl estradiol is an estrogen, while levonorgestrel is a progestin.…

  • Leukaemia

    Any of several malignant diseases where an unusual number of leucocytes form in the blood. Leukaemia is an umbrella term for several malignant disorders of white blood cells, in which they proliferate in a disorganized manner. The disease is also characterized by enlargement of the spleen, changes in the bone marrow, and enlargement of the…

  • Leucoplakia

    A condition in which white patches form on mucous membranes, e.g. on the tongue or inside of the mouth.  

  • Leuconychia

    A condition in which white marks appear on the fingernails.  

  • Leucoma

    A white scar of the cornea.  

  • Leucolysin

    A protein which destroys white blood cells. Toxin able to destroy leucocytes, formed by some strains of Staph, pyogenes.  

  • Leucodeplete

    To remove white cells from the blood.  

  • Letterer-siwe disease

    A usually fatal disease, most common in infants, caused by the overproduction of a specialised type of immune cell. The most common of three distinct histiocytosis syndromes collectively known as Langerhans cell histiocytosis, marked by proliferation of histiocytes in the viscera, bones, and skin. It is believed that this disease and the other two forms…

  • Lethargic

    Showing lethargy.