Educational Articles
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Pituitary macroadenomas are large tumors of the pituitary gland that are either functional (secrete hormones) or non-functional (do not secrete hormones). The clinical signs depend on the type of macroadenoma, though become severe over time in either case. Diagnosis requires specialized CT or MRI imaging. This handout explains the effects of macroadenomas in cats and the treatment options available.
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Pleural effusion refers to the abnormal accumulation of fluid within the chest cavity. The fluid is not found within the lungs, but instead within the pleural sac, essentially meaning the lungs are floating in a chest that is full of fluid. Several conditions can cause pleural effusion, including chylothorax, heart failure, and tumors in the lungs or chest wall. Immediate treatment often requires oxygen support and the removal of the excess fluid by thoracocentesis, which can also then be tested to diagnose the cause of the pleural effusion. Treatment and prognosis vary depending on the underlying cause of the pleural effusion.
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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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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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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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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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Telemedicine is the act of practicing medicine from a distance and your appointment will be conducted by a licensed veterinarian. Before your appointment, gather information on your pet’s history and your current concern. Look at a calendar and write down a timeline of your pet’s problems. Be prepared to answer questions that you would normally be asked at an in-person appointment. Write notes to help you remember everything. Most telemedicine appointments involve the use of some type of video chat. Conduct your visit in a quiet area with good lighting and have your pet with you before the call starts. Not all concerns can be addressed through telemedicine. If your veterinarian is unable to arrive at a diagnosis via telemedicine, he or she can help you determine the next step for your pet to ensure that he or she receives optimal care.
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The American Animal Hospital Association and American Veterinary Medical Association have established guidelines to standardize preventive health care for cats, helping them to live longer, healthier lives. This handout provides an overview of the recommendations within these guidelines and why they are so important.
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Progressive retinal atrophy (PRA) is a group of degenerative diseases that affect photoreceptor cells in the eyes. With this disease, the cells deteriorate over time, eventually leading to blindness. There are two main forms of PRA recognized in cats, an early-onset, inherited form called retinal dysplasia, and a late-onset form. PRA is an inherited condition in Abyssinian and Persian cats. When a cat develops PRA, it should be removed from the breeding program, along with its parents and siblings. As PRA progresses, your cat's vision gradually worsens until she becomes completely blind. There is currently no effective treatment for PRA.
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Prostatic disease in cats is uncommon and, as a result, relatively little is known about these conditions. Enlargement of the prostate is a common sign with most prostatic diseases and may be noted by your veterinarian on a rectal exam. Other diagnostic tests may be required to determine the cause of your cat's condition.
