Congenital And Neonatal Hydrocephalus

Hydrocephalus may develop in utero or during the first few months of life. Congenital hydrocephalus is among the common malformations. The incidence is estimated at 0.5 to 0.8 per 1,000 births. It may be inherited as an autosomal recessive or X-linked trait, or it may be acquired by intrauterine exposure to viral infections

Reticular Vascular Nevus

figure 13.31

Sturge-Weber-Dimitri disease. A. A 2-year-old boy exhibited extensive vascular nevi of the face, scalp, and extremities. B. A skull radiograph shows curvilinear cortical calcifications. C. Leptomeningeal angiomatosis covers the lateral aspect of the cerebral hemisphere. D. A network of thin-walled vessels fills the subarachnoid space (reticular stain). E. Polymicrogyric cortex contains numerous calcospherites (HE).

figure 13.31

Sturge-Weber-Dimitri disease. A. A 2-year-old boy exhibited extensive vascular nevi of the face, scalp, and extremities. B. A skull radiograph shows curvilinear cortical calcifications. C. Leptomeningeal angiomatosis covers the lateral aspect of the cerebral hemisphere. D. A network of thin-walled vessels fills the subarachnoid space (reticular stain). E. Polymicrogyric cortex contains numerous calcospherites (HE).

figure 13.32.

Neurocutaneous melanosis in a 16-year-old woman. A. Melanocytes infiltrate the leptomeninges and extend into the parenchyma along the Virchow-Robin space (HE).

figure 13.32.

Neurocutaneous melanosis in a 16-year-old woman. A. Melanocytes infiltrate the leptomeninges and extend into the parenchyma along the Virchow-Robin space (HE).

(cytomegalovirus, rubella, mumps, varicella-zoster viruses), maternal irradiation, and maternal hypo- or hypervitaminosis A.

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