Diagnostic image evaluation of hydranencephaly and pictorially similar entities, with emphasis on computed tomography.

The radiographic evaluation of a spectrum of vascular cerebral damage is presented, ranging from simple porencephaly to the most severe form, classic hydranencephaly. With a combination of clinical materal and computed tomography, it is possible in most cases to arrive at a specific diagnosis of hydranencephaly or severe bilateral porencephaly. Pictorially similar entities, such as massive congenital subdural hematomas or hygromas, alobar holoprosencephaly, massive hydrocephalus, and massive postanoxic or infective encephalopathies, are discussed.