cephalhematoma

[ sĕf′əl-hē′mə-tōmə ]

n.

A blood cyst, tumor, or swelling of the scalp in a newborn due to an effusion of blood beneath the pericranium, often resulting from birth trauma.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.