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Vulvar and vaginal tumours account for 2.4-3% of neoplasms in dogs, while precise data are not available for cats. In the bitch, vaginal and vulvar tumours constitute about 40% and 34%, respectively, of genital neoplasms, which are the most frequent reproductive system tumours after mammary tumours.   SIGNALMENT AND HISTORY
A three-year-old male domestic shorthaired black cat was presented with widely dilated pupils (63a). The owner felt that he seemed to have lost his vision. She had noticed these changes in the past day and wondered whether it had any relationship to his recent treatment for urinary tract obstruction. He did not respond to a menace test and had slow and incomplete pupillary light reflexes....
Vascular ring anomalies are congenital malformations of the great vessels and their branches which  entrap the oesophagus (and trachea) causing their obstruction. Persistent right aortic arch (PRAA) is the most common anomaly and accounts for about 90% of these disorders. Other anomalies that have been reported are right persistent ductus arteriosus, aberrant right or left subclavian artery (the...
L-asparaginase is a bacterial enzyme isolated from Escherichia coli and Erwinia carotovora. The enzyme from this latter has some advantages (less risk of causing allergic reactions) and some disadvantages (reduced activity and often difficult to obtain). There is also a pegylated form (PEG-asparaginase), which is the enzyme extracted from E. coli stabilised by polyethylene glycol. PEG-...
The genus Bartonella spp. comprises approximately 22 species of vector-transmitted, blood-borne Gram-negative bacilli or coccobacilli capable of infecting different animals and humans. These bacteria are generally the cause of bacteraemia of variable duration resulting from the colonization of vascular endothelial cells and the consequential invasion of red blood cells (Fig. 1).
X-ray examination of the oral cavity is an invaluable diagnostic technique for an in-depth investigation of the real condition of this area. The particular conformation of the mouth of carnivores necessitates the use of specific exposure techniques, each one appropriate for individual anatomical areas. Radiology of the oral cavity is useful on many occasions, the most frequent...
Exocrine pancreatic insufficiency (EPI) is a relatively frequent disorder in the dog, while it is rare in the cat. EPI is a malabsorption disorder characterized by an insufficient secretion of pancreatic enzymes. The inadequate production of digestive enzymes, or a deficiency in their secretion, causes the accumulation of non-digested substances within the intestinal lumen, which have an osmotic...

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