[Operation for the Cranial Mass of a Neonate Born through Cesarean Section:A Case Report].

A female neonate presented with a cranial mass in the left parietal lobe region. She was born through Cesarean section, and there was no history of birth trauma or head injury. Her mother noticed the mass two weeks after birth. It increased slowly in size and turned stiff. CT showed a skull tumor with calcification. MRI findings, with no vascular abnormalities, indicated a possibility of cephalohematoma. 67Ga scintigraphy showed no abnormal uptake in the cranial mass or any other systemic lesion. We performed an operation to examine the histology and to adjust the shape of the skull. The diagnosis from the histological examination was cephalohematoma with calcification. Cephalohematoma occurs less commonly in the case of Cesarean section and usually resolves spontaneously without any intervention. Some studies have reported birth trauma even though the baby was born through a scheduled Cesarean section. Even if there is no definite history of head trauma, it is necessary to consider cephalohematoma when we examine a cranial mass of a neonate.