Bilateral ossified cephalohaematomas
Abnormal head shape.
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There are bilateral bony protruberances from the parietal bones, which are seen to be due to thickened calvarium on the source images. This is the typical appearance of ossified cephalohaematomas.
A cephalohematoma is a traumatic subperiosteal hematoma which is bounded by the periosteum and cannot cross sutures. This distinguishes it from a subgaleal hematoma, which does cross sutures. Cephalohematomas occur in 1–2% of live births.The incidence increases after forceps extraction. Cephalohematomas usually gradually incorporate into the calvaria by ossification. Cephalohematomas may be unilateral or bilateral.