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Medical Dictionary Definitions A-Z List

Medical Dictionary Definitions A - Z - «M»:

  1. Marker, blood Marker, blood
    Marker, blood: A sign of a disease or condition that can be isolated from a blood sample. For example, the monoclonal antibody D8/17 is a diagnostic sign of Pediatric Autoimmune Disorders associated with Strep....
  2. Marker, tumor Marker, tumor
    Marker, tumor: Tumor markers are substances that can be detected in higher-than-normal amounts in the blood, urine, or body tissues of some patients with certain types of cancer. A tumor marker may be made by a tumor itself or by the body in response to the tumor. Such a substance serves to "mark" t...
  3. Marmoreal Marmoreal
    Marmoreal: Resembling marble. For example, the bone in osteoporosis appears marmoreal. From the Latin noun "marmor" meaning "marble."...
  4. Maroteaux-Lamy syndrome Maroteaux-Lamy syndrome
    Maroteaux-Lamy syndrome: A form of mucopolysaccharidosis with the clinical onset before age 3 that is characterized by an inability to metabolize dermatan sulfate. This leads to abnormal accumulation of dermatan sulfate, resulting in mild to severe changes in muscle, bone, skin, and other tissues, ...
  5. Marriage, cousin Marriage, cousin
    Marriage, cousin: A form of consanguinity. Everyone carries recessive alleles, genes that are generally innocuous in the heterozygous state but that in the company of another gene of the same type are capable of causing disease. We are all genetic reservoirs for genetic disease. Since first cousins ...
  6. Marrow Marrow
    Marrow: The bone marrow....
  7. Marsh fever Marsh fever
    Marsh fever: See malaria....
  8. Marshall W. Nirenberg Marshall W. Nirenberg
    Marshall W. Nirenberg: See: Nirenberg, Marshall W....
  9. Marshall-Smith syndrome Marshall-Smith syndrome
    Marshall-Smith syndrome: A disorder characterized by advanced bone age at birth, broad forehead, prominent eyes, and small chin. There is difficulty feeding, failure to thrive, retarded psychomotor development, and predisposition to respiratory infection. It may be fatal within the first years of li...
  10. Martin Rodbell Martin Rodbell
    Martin Rodbell: See: Rodbell, Martin....
  11. Martinus W. Beijerinck Martinus W. Beijerinck
    Martinus W. Beijerinck: See: Beijerinck, Martinus W....
  12. Martorell syndrome Martorell syndrome
    Martorell syndrome: Named after Fernando Martorell Otzet, Spanish cardiologist (1906-1984). In 1944 Martorell provided an excellent description of a syndrome also known today as Takayasu disease. See: Takayasu disease....
  13. Marx Marx
    Marx: See: Marx, Gertie F....
  14. Marx, Gertie F. Marx, Gertie F.
    Marx, Gertie F.: Distinguished German-born American physician known as the "mother of obstetric anesthesia." She almost singlehandedly developed obstetric anesthesiology as a specialty. She advanced the use of epidural injections to ease women's pain during childbirth. She developed an epidural need...
  15. MASA syndrome MASA syndrome
    MASA syndrome: MASA stands for mental retardation, aphasia, shuffling gait, and adducted thumbs. Features of the syndrome include: neurologically: mental retardation and aphasia (lack of speech); limbs: adducted (clasped) thumbs, absent extensor pollicis longus and/or brevis muscles to t...