Webster's New World Medical Dictionary

kyphoscoliosis, idiopathic
Kyphoscoliosis that
occurs during development, without a known cause.
kyphosis
Outward curvature of the spine, causing
a humped back. Treatment includes physical therapy
and wearing a back brace, and in some cases sur-
gery. Surgery for kyphosis may involve inserting a
metal rod in the spine and restructuring some
bones, and it is usually followed by wearing a back
cast and then a back brace for some time.
kyphosis, fixed
Kyphosis caused by collapse of
the vertebrae, usually due to musculoskeletal dis-
ease. See also 
kyphosis.
kyphosis, juvenile
See 
Scheuermann’s disease.
kyphosis, mobile
Kyphosis caused by compen-
sating for muscle weakness or structural abnormal-
ity in another area of the body. See also 
kyphosis.
Koch postulates
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L1 through L5
The five lumbar vertebrae, which
are situated between the thoracic vertebrae and the
sacral vertebrae in the spinal column.
La Leche League
An organization that helps and
supports breastfeeding mothers with advice, ideas,
and both legal and medical advocacy. Abbreviated LLL.
lab result
The result of a test done in a laboratory.
lab test
A test that is done in the laboratory where
the appropriate equipment, supplies, and certified
expertise are available.
labia
Lips, the fleshy folds that surround the
opening of the mouth (oral labia) or the vagina (the
labia majora and labia minora).
labia, oral
The lips around the mouth. See also
lip.
labia, vaginal
The two pairs of labia (lips)—the
labia majora and labia minor—at the entrance to
the vagina. Together the vaginal labia form part of
the vulva, the female external genitalia.
labia majora
The larger (major) outside pair of
labia (lips) of the vulva (the female external geni-
talia). See also 
labia, vaginal.
labia minora
The smaller (minor) inside pair of
labia (lips) of the vulva (the female external geni-
talia). See also 
labia, vaginal.