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Encyclopedia > Acalvaria

Acalvaria is a rare malformation consisting of absence of the calvarial bones, dura mater and associated muscles in the presence of a normal skull base and normal facial bones. The central nervous system is usually unaffected. The dura mater (from the Latin hard mother), or pachymeninx, is the tough and inflexible outermost of the three layers of the meninges surrounding the brain. ... A diagram showing the CNS: 1. ...


References

  • Harris CP, Townsend JJ, Carey JC (1993). Acalvaria: a unique congenital anomaly. Am J Med Genet 46 (6): 694-9. PMID 8362912

  Results from FactBites:
 
Acalvaria (4770 words)
Acalvaria is a rare malformation defined as missing scalp and flat bones over an area of the cranial vault.
The presumed pathogenesis of acalvaria is faulty migration of the membranous neurocranium with normal placement of the embryonic ectoderm, resulting in absence of the calvaria but an intact layer of skin over the brain parenchyma.
Prenatal diagnosis is made by ultrasonography and usually confirmed by magnetic resonance imaging because the condition may be confused with anencephaly or encephalocele.
Indian Pediatrics - Editorial (902 words)
Acalvaria is a rare congenital malformation in which the flat bones of the cranial vault, duramater and associated muscles are absent but the central nervous system is usually unaffected.
Acalvaria is a rare congenital anomaly of unknown pathogenesis in which the flat bones of the cranial vault, duramater and associated muscles are absent and the facial bones and the base of the skull are normally present with normal cranial contents(1).
Acalvaria is a rare congenital mal-formation distinguished by absence of the calvarium.
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