An infant girl was referred for assessment and management of a large frontal skull defect. She was born, after an uneventful pregnancy, by caesarian section to a 36-year-old mother (G1P1). The procedure was performed electively for a breech presentation. Her antenatal ultrasound had shown no specific abnormalities. The attending pediatrician immediately noted a large bi-frontal (but predominant...

Prenatal ultrasonography at 24 weeks disclosed a fetus with a large mass protruding from the occiput. The mass was an invasive, undifferentiated mesenchymal neoplasm of the scalp associated with a defect in the occipital bone (cranium bifidum). The tumor may have derived from neural crest at the site of rhombencephalic closure. The tumor itself would seem to be a sporadic event, but the cranium...

Guthkelch, A. N. (1970). Archives of Disease in Childhood, 45, 104. Occipital cranium bifidum. This paper describes a follow-up of 74 consecutive cases of occipital cranium bifidum born and treated between 1948 and 1965, and the surgical technique used in their repair. When no hydrocephalus developed, 86%/' of the cases of cranial meningocele, but only 40% of those of encephalocele, showed norm...

BACKGROUND Congenital cranial bone defects predispose to herniation of meninges, sometimes with brain tissue involvement, to form a cerebrospinal fluid (CSF)-filled cyst in the head. Such defects mainly results from focal failure of neural tube closure during fetal development and has been reported in various species of domestic mammals. CASE PRESENTATION A one week old Ayrshire calf with a f...