Author's Organization:Department of Veterinary Pathology School of Veterimary Medicine, Azabu University Department of Veterinary Pathology School of Veterimary Medicine, Azabu University Veterinary Radiology, Scool of Veterimary Medicine, Azabu University Hyohdoh Veterinary Clinic Department of Veterinary Pathology School of Veterimary Medicine, Azabu University Department of Veterinary Pathology School of Veterimary Medicine, Azabu University