Posterior fossa subdural hemorrhage in the newborn.

Posterior fossa subdural hematoma formation in the newborn is an infrequently reported event. It is characterized by a complicated delivery, usually at term, followed by developing lethargy and irritability within the first few days of life. Respiratory irregularities, tense anterior fontanelle, and increasing head circumference ensue, accompanied by a falling hemoglobin and blood-stained cerebrospinal fluid. Various cranial nerves may also be involved. Previously reported cases have been marked by diagnostic delays that affected the subsequent outcome of some of the patients. Computed tomography (CT) allows for earlier confirmation of the diagnosis, especially where coronal views are employed. Three cases are reported here to illustrate the above features.