Tuyển tập các báo cáo nghiên cứu khoa học quốc tế về bệnh thú y đề tài: Dilation of the olfactory bulb cavity concurrent with hydrocephalus in four small breed dogs | J. Vet. Sci. 2009 10 2 173-175 DOI Case Report JOURNAL OF Veterinary Science Dilation of the olfactory bulb cavity concurrent with hydrocephalus in four small breed dogs Jung-Hyun Kim1 t Hyo-Won Jeon1 t Eung-Je Woo2 Hee-Myung Park1 BK21 Basic Diagnostic Veterinary Specialist Program for Animal Diseases and Department of Veterinary Internal Medicine College of Veterinary Medicine Konkuk University Seoul 143-701 Korea 2College of Electronics and Information Kyunghee University Yongin 446-701 Korea 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. Keywords dog hydrocephalus olfactory bulb cavity seizure Hydrocephalus is characterized by increased cerebrospinal fluid CSF volume and associated with dilation of the ventricular system of the brain resulting from abnormal CSF drainage due to a congenital anomaly secondary to mass lesions or inflammation 6 9 . There is increasing evidence that CSF drainage takes place not only at the arachnoid villi but also several extracranial sites 9 . The evidences for communication between the CSF pathways and the extracranial lymphatic system by the nasal lymphatics in various animals including mice rats rabbits sheep pigs monkeys and humans 1 4 5 7 11 have been reported. Therefore the nasal lymphatics might serve as a reserve mechanism for or be primarily involved in the absorption of CSF in hydrocephalus. 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
