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Medical Term:

lumbosacral enlargement


Definition: a spindle-shaped swelling of the spinal cord beginning at the level of the tenth thoracic vertebra and tapering into the medullary cone, with maximum thickness opposite the last thoracic vertebra, consequential to the innervation of the lower limb.

Synonym(s): intumescentia lumbosacralisTA, lumbosacral enlargement of spinal cord