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Dilation of the olfactory bulb cavity concurrent with hydrocephalus in four small breed dogs.

Kim JH, Jeon HW, Woo EJ, Park HM - J. Vet. Sci. (2009)

Bottom Line: Four small breed dogs were admitted with seizures.Magnetic resonance imaging (MRI) of the brain revealed dilation of the olfactory bulb cavity as well as enlargement of the lateral ventricles.This is the first description of the clinical and MRI features of dilation of the olfactory bulb cavity concurrent with hydrocephalus in dogs.

View Article: PubMed Central - PubMed

Affiliation: Department of Veterinary Internal Medicine, BK21 Basic & Diagnostic Veterinary Specialist Program for Animal Diseases, College of Veterinary Medicine, Konkuk University, Seoul, Korea.

ABSTRACT
Four small breed dogs were admitted with seizures. Magnetic resonance imaging (MRI) of the brain revealed dilation of the olfactory bulb cavity as well as enlargement of the lateral ventricles. These findings demonstrate that dilation of the olfactory bulb cavity can occur concurrent with hydrocephalus. This is the first description of the clinical and MRI features of dilation of the olfactory bulb cavity concurrent with hydrocephalus in dogs.

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Related in: MedlinePlus

MR images obtained from patients. (A-D) Transverse T1-weighted images (WI) of Case 1, 2, 3, and 4 show the enlarged lateral ventricles, respectively. (E-H) Dorsal T1-WI of Case 1, 2, 3, and 4 show hypointensity lesion (arrows) in olfactory bulb, respectively.
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Figure 1: MR images obtained from patients. (A-D) Transverse T1-weighted images (WI) of Case 1, 2, 3, and 4 show the enlarged lateral ventricles, respectively. (E-H) Dorsal T1-WI of Case 1, 2, 3, and 4 show hypointensity lesion (arrows) in olfactory bulb, respectively.

Mentions: A 3-year-old intact female Miniature Poodle (Case 1), a 3-year-old intact female Chihuahua (Case 2), an 8-year-old intact male Yorkshire terrier (Case 3), and a 16-year-old intact male Yorkshire terrier (Case 4) were referred to Konkuk University Teaching Animal Hospital with seizures. The neurological examination in Case 2 revealed a left-sided head tilt, strabismus, and decreased postural reactions. Case 4 had an elevated blood urea nitrogen and elevated creatine kinase on the serum biochemistry profile. In the other two cases, the neurological examination and the magnetic resonance imaging (MRI) results were not remarkable. The MRI of the brain using a 0.2 Tesla magnet (E-Scan; Esaote, Italy) revealed dilation of the lateral ventricles and the olfactory bulb cavity. MRI of patients were presented in Fig. 1. For Case 1, food was presented beneath the nose of the dog to examine olfaction and normal sniffing behavior was observed. In addition, the dog was challenged with a piece of cotton soaked with 10% acetic acid to each nostril. Olfaction was reduced unilaterally on the affected side. The neurological signs of these patients were improved by medication including prednisolone (Chorus Pharma, Korea) and furosemide (Handok Pharma, Korea). In Case 3, the seizures recurred and were controlled by phenobarbital (Daihan Pharm, Korea).


Dilation of the olfactory bulb cavity concurrent with hydrocephalus in four small breed dogs.

Kim JH, Jeon HW, Woo EJ, Park HM - J. Vet. Sci. (2009)

MR images obtained from patients. (A-D) Transverse T1-weighted images (WI) of Case 1, 2, 3, and 4 show the enlarged lateral ventricles, respectively. (E-H) Dorsal T1-WI of Case 1, 2, 3, and 4 show hypointensity lesion (arrows) in olfactory bulb, respectively.
© Copyright Policy
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC2801114&req=5

Figure 1: MR images obtained from patients. (A-D) Transverse T1-weighted images (WI) of Case 1, 2, 3, and 4 show the enlarged lateral ventricles, respectively. (E-H) Dorsal T1-WI of Case 1, 2, 3, and 4 show hypointensity lesion (arrows) in olfactory bulb, respectively.
Mentions: A 3-year-old intact female Miniature Poodle (Case 1), a 3-year-old intact female Chihuahua (Case 2), an 8-year-old intact male Yorkshire terrier (Case 3), and a 16-year-old intact male Yorkshire terrier (Case 4) were referred to Konkuk University Teaching Animal Hospital with seizures. The neurological examination in Case 2 revealed a left-sided head tilt, strabismus, and decreased postural reactions. Case 4 had an elevated blood urea nitrogen and elevated creatine kinase on the serum biochemistry profile. In the other two cases, the neurological examination and the magnetic resonance imaging (MRI) results were not remarkable. The MRI of the brain using a 0.2 Tesla magnet (E-Scan; Esaote, Italy) revealed dilation of the lateral ventricles and the olfactory bulb cavity. MRI of patients were presented in Fig. 1. For Case 1, food was presented beneath the nose of the dog to examine olfaction and normal sniffing behavior was observed. In addition, the dog was challenged with a piece of cotton soaked with 10% acetic acid to each nostril. Olfaction was reduced unilaterally on the affected side. The neurological signs of these patients were improved by medication including prednisolone (Chorus Pharma, Korea) and furosemide (Handok Pharma, Korea). In Case 3, the seizures recurred and were controlled by phenobarbital (Daihan Pharm, Korea).

Bottom Line: Four small breed dogs were admitted with seizures.Magnetic resonance imaging (MRI) of the brain revealed dilation of the olfactory bulb cavity as well as enlargement of the lateral ventricles.This is the first description of the clinical and MRI features of dilation of the olfactory bulb cavity concurrent with hydrocephalus in dogs.

View Article: PubMed Central - PubMed

Affiliation: Department of Veterinary Internal Medicine, BK21 Basic & Diagnostic Veterinary Specialist Program for Animal Diseases, College of Veterinary Medicine, Konkuk University, Seoul, Korea.

ABSTRACT
Four small breed dogs were admitted with seizures. Magnetic resonance imaging (MRI) of the brain revealed dilation of the olfactory bulb cavity as well as enlargement of the lateral ventricles. These findings demonstrate that dilation of the olfactory bulb cavity can occur concurrent with hydrocephalus. This is the first description of the clinical and MRI features of dilation of the olfactory bulb cavity concurrent with hydrocephalus in dogs.

Show MeSH
Related in: MedlinePlus