Resumo

PARRA-GUAYASAMIN, S. G.; ESTRELLA-SILVA, M. V.  e  GONZALEZ-PUETATE, I. R. Determination of congenital lesions in the encephalon of dogs by magnetic resonance imaging in Quito, Ecuador. Rev. Med. Vet. Zoot. [online]. 2023, vol.70, n.3, e3.  Epub 02-Abr-2024. ISSN 0120-2952.  https://doi.org/10.15446/rfmvz.v70n3.106892.

The aim of this retrospective study was to determine congenital malformations by MRI in 147 canines that underwent a brain scan by medical recommendation between 2017 and 2022 in Quito, Ecuador. The result was related to the sex, age, and breed of each patient. Sixteen patients were identified by MRI with the presence of congenital malformations. The age group for these pathologies was between 3 months and 7 years and only 1 patient older than 7 years was found. The most frequently diagnosed lesion was hydrocephalus 8.2% (n=12/147), Chiari-Like malformation 1.4% (n=2/147), a diagnosis of dysgenesis of the corpus callosum 0.7% (n=1/147) and 1 case of alteration of the septumpellucidum, 0.7% (n=1/147). Hydrocephalus occurred more frequently between 3 months and 7 years, in Pug, English Bulldog, and brachycephalic dogs. Chiari malformations were the second most common type, diagnosed between 1 and 7 years of age, and were found in a brachycephalic patient of the Chihuahua breed and a mesocephalic patient of the Yorkshire Terrier breed. The most frequently diagnosed lesions were hydrocephalus (8.2%) and Chiari malformation (1.4%), with an age of presentation mostly up to 7 years.

Palavras-chave : MRI; Chiari-Like; congenital malformations; hydrocephalus.

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