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Pneumothorax is an accumulation of air outside the lungs, but inside the chest wall. The air outside the lung prevents the lungs from inflating normally, and can lead to lung collapse. There are several variations of pneumothorax.
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Pododermatitis is a term used to describe inflammation of the feet or paws. It can be caused by many disorders including infections, allergies, hormonal disorders, immune-mediated diseases, tumors or cancers. Diagnostic testing is discussed. Effective treatment must be directed toward the underlying cause.
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Polycystic Kidney Disease (PKD) is an inherited condition that causes multiple cysts (fluid pockets) in the kidneys. Persian cats and breeds with Persian bloodlines are most commonly affected. The clinical signs, diagnosis, genetic testing, and treatment options are explained in this handout.
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Polycystic kidney disease (PKD) is an inherited kidney disease that is common in cats, but uncommon in dogs. Dogs with polycystic kidney disease develop multiple fluid-filled cysts within the kidney, with the number and size of these cysts increasing with age. As the kidney cysts displace larger amounts of functioning kidney tissue, the dog begins to show signs of chronic kidney disease. There is no specific treatment for polycystic kidney disease; treatment is centered on alleviating the signs of chronic kidney disease.
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Polycythemia vera is a rare disease of dogs and cats in which too many red blood cells are produced by the bone marrow. The blood becomes thick and has difficulty moving through the small blood vessels. Your pet may feel tired, sluggish, and weak. Polycythemia is a potentially fatal disease, but if discovered early enough, treatment may be possible. If left untreated, polycythemia vera can affect the heart.
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Polyfolliculosis is a condition where several feathers grow out of one feather follicle. These feathers may be irritating, causing the bird to pick at them or pluck them out. There is no specific treatment for this condition.
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Avian polyomavirus infection (APV) of pet birds belongs to the family Polyomaviridae. APV can cause benign feather lesions in budgies, slow crop emptying in weanling parrots, hemorrhages on the skin, or acute death. Species particularly susceptible to APV infection include budgies, Eclectus parrots, Caiques, and hawk-head parrots. Clinical signs, diagnostic testing, and preventive measures are explained in this handout.
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A portosystemic shunt causes a bypass of blood from the gastrointestinal tract directly into the systemic circulation, avoiding the normal detoxifying process that happens in the liver and reducing nutrient input into the liver. Liver shunts can be congenital defects (failure of closure of the ductus venosus or inappropriate vascular development) or acquired (development of extra vessels caused by portal vein hypertension). Clinical signs include failure to thrive (runt), head pressing or other neurological signs especially after high protein meals, delay in anesthetic recovery, increased urination, and vomiting or diarrhea. CBC and biochemistry can be altered in a dog with a portosystemic shunt (e.g., microcytic anemia, low BUN, glucose, elevated ALT) and urinalysis can show abnormal crystals and possibly infection. Bile acids will be elevated. CT, ultrasound, or other more advanced imaging will confirm and locate the shunt. Initial treatment includes a change to a low protein diet, lactulose to absorb ammonia and other toxins, and antibiotics to change the bacterial population of the intestines. Some dogs do well with medical management; however, many need surgical treatment to gradually close off the shunt. Surgery is very successful and dogs return to normal in 2-4 months.
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This handout explains post-vaccination sarcomas (also called injection-site sarcomas) in cats. They are a rare consequence of vaccine injections (and other drugs or materials) that can cause a very aggressive form of cancer at the site of the injection. The incidence of this condition, as well as precautions you and your veterinarian can take, are highlighted.
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Poxviruses can infect many species of birds, and each species of bird may have its own unique species of poxvirus. This handout explains three forms of the virus: cutaneous, diphtheroid, and septicaemic. Each of these forms has distinct clinical signs. Diagnosis, treatment, and ways to minimize the risk of infection in your bird are explained.