Neuroradiology

Cephalohaematoma

usually a clinically nonsignificant complication of birth trauma, particularly in forceps delivery. It consists of an extracranial traumatic subperiosteal haemorrhage and occurs in about 1% of live births. It presents as a firm tense subgalean collection that may increase for a while after birth and resolves within a few weeks or months. At CT or MR (Fig.1) it appears as a crescent-shaped collection adjacent to the outer table of the skull with varying density/intensity of extravasated blood according to the age of the haematoma itself.

GS

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Fig.1

MR, proton density image of a newborn. Right parietal subperiosteal collection.
Cephalohaematoma, Fig.1