Calcified cephalohematoma of infancy is a result of a subperiosteal blood collection, that usually forms during birth-related trauma.  It occurs when a cephalohematoma is not absorbed within the first weeks of its presentation and begins to ossify over the surface. The calcification may continue to enlarge. Calcification occurs in <5% of cephalohematomas.

Calcified cephalohematomas can permanently deform the infant cranium, and significant deformities often require correction. Although several reconstructive techniques have been proposed, there is no consensus on their management.

Images courtesy Dr. Andres Agudelo. Universidad Pontificia Bolivariana

Reference:

Management of Calcified Cephalohematoma of Infancy: A Single Institution 25-Year Experience University of Michigan – C. S. Mott Children’s Hospital, Ann Arbor, MI doi: 10.1097/01.GOX.0000720480.19319.a0

Al Kabbani, A., Bell, D. Calcified cephalohematoma. Reference article, Radiopaedia.org. (accessed on 30 Mar 2022) https://doi.org/10.53347/rID-72946