CLA: 1. Conjugated linoleic acid.
2. Cervical lymphadenopathy (swollen lymph nodes in the neck).
3. Congenital lactic acidosis.
4. Caseous lymphadenitis (cheeselike lymph nodes, usually due to TB).
Clade: Related organisms descended from a common ancestor. For example, isolate M of HIV-1 (the human immunodeficiency virus) consists of at least ten clades. Imported from the Greek, klados, branch in 1911 in reference to the Tree of Life.
Clap: Gonorrhea, a bacterial infection transmitted by sexual contact. Gonorrhea is one of the oldest known sexually transmitted diseases (STDs). In women infected with this bacteria (Neisseria gonorrhoeae), 25% to 40% will also be infected with another bacteria that can cause another STD called Chlamydia. Gonorrhea is NOT transmitted from toilet seats. More than half […]
- Clark level of invasion
Clark level of invasion: A method for determining the prognosis (outlook) with melanoma. The method was devised by the pathologist Wallace Clark and measures the depth of penetration of a melanoma into the skin according to anatomic layer. There are five Clark levels of invasion: Level I: Melanomas confined to the outermost layer of the […]
- Clasped thumbs and mental retardation
Clasped thumbs and mental retardation: A syndrome with the following characteristic features: (1) neurologically: mental retardation and aphasia (lack of speech); (2) limbs: adducted (clasped) thumbs, absent extensor pollicis longus and/or brevis muscles to the thumb, shuffling gait, and leg spasticity; (3) growth: small body size; (4) skeleton: lumbar lordosis (sway back). The syndrome is […]
Limping. From the Latin claudicare, which means ‘to limp.’ The Roman emperor Claudius was so named because he limped, probably because of a birth defect.