%0 Journal Article %T MRI of lobar holoprosencephaly in a cat with hypodipsic hypernatraemia %A Genya Shimbo %A Kazuro Miyahara %A Masashi Yanagawa %A Michihito Tagawa %J Journal of Feline Medicine and Surgery Open Reports %@ 2055-1169 %D 2018 %R 10.1177/2055116918801602 %X A 2-year-old neutered female domestic shorthair cat presented with a history of hypodipsia, recurrent hypernatraemia, pelvic limb ataxia and tremor. The serum arginine vasopressin level was low for the serum osmolality. MRI of the brain revealed a failure of separation of the cerebrum, which manifested as absence of the rostral part of the corpus callosum, fornix and septum pellucidum, thus resulting in a single fused ventricle. The diagnosis was lobar holoprosencephaly with hypodipsic hypernatraemia. To our knowledge, this is the first description of the MRI characteristics of lobar holoprosencephaly in a cat. This report suggests that MRI examination should be considered for precise diagnosis of hypodipsic hypernatraemia in young cats %K Brain malformation %K holoprosencephaly %K hypernatraemia %K hypodipsia %K magnetic resonance imaging %U https://journals.sagepub.com/doi/full/10.1177/2055116918801602