Educational Articles
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Testicular tumors are generally not aggressive and have a low metastatic rate. Pets with undescended testicles (cryptorchid) are predisposed to the development of certain testicular tumors. Hyperestogenism is possible with Sertoli cell tumors. In any cryptorchid pet, removal of both testicles should be pursued. Intraabdominal tumors in cryptorchid pets may cause lethargy, decreased appetite, and fever. Standard staging is recommended in all cases, including a rectal exam. Surgery is typically the treatment of choice and may be combined with radiation therapy or chemotherapy if metastasis is evident.
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Abdominal enlargement in dogs may occur due to a simple cause such as obesity, pregnancy, or intestinal parasites; however, it can also be a sign of different illnesses including hyperadrenocorticism, hypothyroidism, heart disease, organ enlargement trauma, GDV, and cancer. Identifying the cause of abdominal enlargement can take several steps starting with history and physical exam, progressing to screening tests including bloodwork and urinalysis. The CBC is assessed for signs of anemia, low platelets, or signs of inflammation. A biochemistry profile may reveal liver or kidney dysfunction, hypo- or hyperproteinemia, hypoglycemia, or other abnormalities. Urinalysis is used to fully interpret the biochemistry and check for abnormal urinary sediment. Based on the findings of the screening tests, additional diagnostics may include imaging, EKG, tissue biopsy, or fluid analysis.
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Diarrhea can be a simple diagnosis or a complex one. A thorough history and physical exam may be enough to determine the cause; however, in less obvious cases, various tests may be needed. Pending the results, a treatment plan can be developed.
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Various conditions can cause increased thirst (polydipsia) and urination (polyuria). Based on your pet's history and a thorough physical examination, your veterinarian will recommend diagnostic testing to determine the cause. This handout describes several tests that can be performed along with the conditions the results from these tests may indicate.
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There are several tests for diagnosing leptospirosis, but the two most common ones are the DNA-PCR test and the microscopic agglutination test (MAT). Infection can be diagnosed with either test, but each has weaknesses, and in some situations, both tests may be needed to reach a diagnosis.
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This handout discusses Lyme disease in dogs, primarily the issue of methods of testing for the disease.
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In pets, pallor is usually detected as a loss of color from the gums and inner eyelids and can be a sign of anemia or poor circulation. A pet’s history of illness and a complete physical examination are important in determining the cause of the pallor. However, your veterinarian may also recommend doing screening tests such as a complete blood count, serum biochemistry and urinalysis. Additional tests may also be needed.
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Finding the cause of a pet's seizures can be difficult. Screening usually starts with a complete history and physical examination, followed by blood and urine tests to look for underlying diseases that can cause seizures. If the cause still cannot be identified, it is possible that they originate within the brain itself and further neurologic testing might be advised.
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Unexplained bleeding is worrisome because it suggests a problem with the body’s blood clotting or coagulation system. Disorders of the coagulation system can arise for many reasons, including shortages of coagulation factors (clotting proteins), a shortage of platelets (a type of blood cell), defective platelets, and serious systemic disease affecting the whole body.
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A pet with vomiting may suffer from an isolated incident, or it could be a sign of more severe problems. If the cause for vomiting is not obvious from history and examination, screening tests may be done to eliminate possible causes and determine a treatment plan. Results can also provide a prognosis for recovery and long-term outlook.
