Congenital pineoblastoma in the newborn: ultrasound evaluation.

Transfontanelle, real-time ultrasound (US) examinations were performed in two newborn infants with congenital pineoblastoma. The tumors were hyperechoic relative to the surrounding cerebral tissue. Both were midline lesions that abutted on the posterior portion of the third ventricle, causing obstructive hydrocephalus. The US findings were correlated with CT, pathologic examination, and clinical follow-up study.