R. Cammalleri et al., MONOSYMPTOMATIC PRESENTATION OF TYPE-I ARNOLD-CHIARI MALFORMATION - REPORT OF 2 CASES, Italian journal of neurological sciences, 15(1), 1994, pp. 57-60
Two cases of type I ACM are described, one of which presented with diz
ziness in late childhood (case 1), the other with mild intention tremo
r in adulthood (case 2). Cerebellar ectopia should be considered in mo
nosymptomatic patients even in the absence of other symptoms and signs
of CN.S. dysfunction. Magnetic resonance imaging of the craniocervica
l junction should be performed because it may be diagnostic for type I
ACM.