Brain tumors in the neonatal period most commonly appear as hydrocephalus without substantial localizing signs. Ventriculography and pneumoencephalography can detect the presence of a mass lesion even at this age. A neonate had a mass lesion that was shown by air ventriculography to be obstructing the aqueduct of Sylvius. This proved to be a polymorphic sarcoma. This case represents, to our knowledge, the second such congenital tumor to be reported.
Crosley CJ, Mishkin M, Rorke LB. Congenital Sarcoma of the Brain: Diagnosis During the Neonatal Period. Am J Dis Child. 1974;128(4):523–526. doi:10.1001/archpedi.1974.02110290093017
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