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Lumen
Pronunciation
Definition 1
The cavity or channel within a tube or tubular organ such as a blood vessel or the intestine. (NCI Dictionary)
Definition 2
A SI derived unit of luminous flux. It is the amount of light that falls on a unit area at unit distance from a source of one candela. (NCI Thesaurus)
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The region of the spine in the lower back that consists of the five lumbar vertebrae and the sacrum.
A benign well-circumscribed tumor, composed of lobules of mature adipocytes, that arises within the lumbosacral tissue of the spine.
A rare disorder marked by a hemangioma (a benign blood vessel tumor) that spreads across a large area of the lower back…
A fracture of one of the lumbar vertebra.
One of the five bones situated between the thoracic vertebrae and the sacrum in the lower part of the spine.
Decreased flexibility of a lumbar spine joint.
