We report our findings in three dogs diagnosed with canine atopic dermatitis(CAD), who had high specific IgE levels for the house dust mite(HDM). The intradermal skin test was administered in all three cases using the domestic HDM antigen (10,000 JAU/ml; prepared by 10-fold dilution of the 100,000 JAU/ml stock) (for use in humans, Torii yakuhin Corporation, Tokyo, Japan) and the overseas HDM antigen (12,000 PNU/ml) (for use in dogs, Greer Corporation, Lenoir, NC, USA). The effects of the antigens were compared using an objective index (pomphus diameter) . The results revealed no statistical difference (p > 0.05), indicating equal antigenicity between the two HDM antigens in the intradermal skin test in dogs with CAD.

A subcutaneous mineralized mass was found in the right perianal area of a twelve-year-old male miniature duchshund. The mass involving the circumference muscle, external sphincter of anus, obturator internus muscle, and coccygeus muscle, was surgically removed. Perineal hernia was identified after removing the mass. Histopathological examination revealed the presence of degenerated adipose and connective tissues and well-differentiated bone tissue in the mass, suggesting a diagnosis of paraprostatic cyst associated with perineal hernia.

An 8 years and 5 months old Miniature Dachshund, who showed weight loss for 7 months, was diagnosed as having a hepatic arteriovenous fistula (HAVF) with acquired portal circulation shunt (APSS). Hepatic lobectomy of the outer left lobe including the HAVF and closure of a part of the APSS were performed. Postoperatively, mild decline in liver function and hyperammonemia persisted for some time , but liver enzyme values and blood ammonia levels nearly normalized 6 months after the operation.

A mass was found incidentally in the peritoneal cavity of a 10-year-old contraceptive cat on radiographic examination as part of a wellness check. A computed tomography scan revealed a cystic mass in the left lobe of the pancreas. A sample of cystic fluid taken intraoperatively contained pancreatic enzymes and epithelial cells. Resection of the pancreatic cyst required partial excision of the left lobe of the pancreas. The histopathologic diagnosis was non-neoplastic true cyst. The cyst was difficult to detect because of its asymptomatic nature. Computed tomography and examination of cystic fluid were useful for demonstrating the presence of this pancreatic cyst. In view of the risk of cystic fluid leaking into the peritoneal cavity, surgery should always be considered for a pancreatic cyst, regardless of whether it is benign or malignant, particularly if it is not reducing in size.