Lentigo maligna melanoma
One of the four clinical types of malignant melanoma and the slowest growing type. Lentigo maligna melanoma typically begins as a patch of mottled pigmentation that is dark brown, tan, or black on sun-exposed skin, such as on the face.
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A genetic disorder characterized by microphthalmia (small eye) or anopthalmia (no eye) associated with malformation of the ears, teeth, fingers, skeleton, and genitourinary system. About half of patients have microcephaly (small head) and mental retardation. The syndrome is inherited in an X-linked recessive manner with females carrying a mutation at one of two separate gene […]
- Leon virus
Type 1 (known as the Brunhilde virus) and Type 2 (known as the Lansing virus). Immunity to one strain does not provide protection against the other two. All three strains are therefore included in the poliovirus vaccine.
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Architect, engineer, inventor, painter and the father of anatomic art. Leonardo da Vinci first became interested when he was asked by a Veronese anatomist named Marc Antonia Della Torre to do the illustrations for a text of anatomy. Della Torre was to do the dissecting and Leonardo the drawings. Della Torre died unexpectedly and Leonardo […]
- LEOPARD syndrome
L — lentigines (dark freckles) on the head and neck E — electrocardiogram (EKG) abnormalities O — ocular hyperteleorism (wide-spacing of the eyes) P — pulmonary stenosis A — abnormal genitalia R — retardation of growth D — deafness (sensorineural type) The LEOPARD syndrome is caused by mutations in the gene for protein-tyrosine phosphatase, nonreceptor-type, […]
- Leper
1. Someone with leprosy (Hansen disease). The term leper is now in disfavor. 2. By extension, a pariah. A person who is avoided or shunned by society. From the French lepre, from the Greek lepros meaning scaly, referring to the scales that form on the skin in some cases of leprosy.