doi: 10.3174/ajnr.A1566
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American Journal of Neuroradiology 30:1620-1622, September 2009
© 2009 American Society of Neuroradiology
Case Report
PEDIATRICS
Syndrome of Megalencephaly, Polydactyly, and Polymicrogyria Lacking Frank Hydrocephalus, with Associated MR Imaging Findings
aFrom the Department of Radiology (H.G.T.), Baskent University Faculty of Medicine, Ankara, Turkey
bUniversity of Minnesota and Hennepin County Medical Centers (A.M.M., V.A.N., B.L., C.L.T.), Minneapolis, Minn
cThe Hospital for Sick Children (C.R.), Toronto, Ontario, Canada.
Please address correspondence to Alexander M. McKinney, MD, Department of Radiology, Hennepin County Medical Center, 701 Park Ave, Minneapolis MN, 55415; e-mail: mckinrad{at}umn.edu
SUMMARY: Megalencephaly, polymicrogyria, polydactyly, and hydrocephalus (MPPH) syndrome has been recently recognized and is very rare. Each case reported so far has demonstrated hydrocephalus to varying degrees. We report an infant with MPPH syndrome, but lacking frank hydrocephalus. The additional finding of an abnormally elongated pituitary infundibulum has not been described in this syndrome and, along with the presence of a regressing cystic cavum septum pellucidum, suggests that chronic underlying hydrocephalus may have been present.