Arnold Chiari malformation classified as Chiari 1.5 malformation in a Japanese black calf

Shogo SATO; Takehiko KAKIZAKI; Kao KONDO; Chihiro KANNO; Yosuke MAEDA; Ryo ANDO; Chun-Ho PARK; Hiroaki KAWAGUCHI; Fumiaki TAKAHASHI

doi:10.1292/jvms.22-0463

Internal Medicine

Arnold Chiari malformation classified as Chiari 1.5 malformation in a Japanese black calf

Shogo SATO, Takehiko KAKIZAKI, Kao KONDO, Chihiro KANNO, Yosuke MAEDA, Ryo ANDO, Chun-Ho PARK, Hiroaki KAWAGUCHI, Fumiaki TAKAHASHI

Author information

Shogo SATO
School of Veterinary Medicine, Kitasato University, Aomori, Japan
Takehiko KAKIZAKI
School of Veterinary Medicine, Kitasato University, Aomori, Japan
Kao KONDO
School of Veterinary Medicine, Kitasato University, Aomori, Japan
Chihiro KANNO
School of Veterinary Medicine, Kitasato University, Aomori, Japan
Yosuke MAEDA
School of Veterinary Medicine, Kitasato University, Aomori, Japan
Ryo ANDO
School of Veterinary Medicine, Kitasato University, Aomori, Japan
Chun-Ho PARK
School of Veterinary Medicine, Kitasato University, Aomori, Japan
Hiroaki KAWAGUCHI
School of Veterinary Medicine, Kitasato University, Aomori, Japan
Fumiaki TAKAHASHI
School of Veterinary Medicine, Kitasato University, Aomori, Japan

Keywords: Arnold Chiari malformation, calf, computed tomography, magnetic resonance imaging, syringomyelia

JOURNAL OPEN ACCESS

2023 Volume 85 Issue 5 Pages 546-550

DOI https://doi.org/10.1292/jvms.22-0463

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Abstract

A 2-day-old male black calf presented with neurological symptoms, including opisthotonus. It was unable to stand due to hindquarter paresis. At 5 days old, the calf was able to stand, but exhibited a crossed forelimb gait. Computed tomography and magnetic resonance imaging revealed the expansion of the sutures between the squamous-lateral part of the occipital bone and between the occipital-temporal bone, cerebellar tonsillar herniation, posterior displacement of the brainstem, and cervical syringomyelia at 12 days old. This is the first case report of a live calf diagnosed with Arnold Chiari malformation classified as Chiari type 1.5 malformation in humans.

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