Choroid plexus papilloma in early infants.

Four infants with choroid plexus papillomas which were successfully treated with surgery are described. All patients showed the clinical signs of increased intracranial pressure and hydrocephalus within 8 weeks after birth. The tumors were in the lateral ventricles and histologically three of them were benign papillomas and other one was a malignant papilloma. Computerized tomography scan was useful for the diagnosis of both of the tumor and the hydrocephalus that was caused by the overproduction of cerebrospinal fluid and/or the obstruction of it's pathway. The tumor stain on the angiograms was noticed in two patients. Three patients have grown normally in both physical and mental functions after the surgical treatment, whereas one showed psychomotor retardation because of poorly controlled hydrocephalus.