Canine Adenoma - Carcinoma | Adenoma - Carcinoma in Dogs
Canine Adenoma - Carcinoma | Adenoma - Carcinoma in Dogs
Thyroid adenomas in dogs are usually small, nonfunctional masses that do not cause clinical signs and are found incidentally at necropsy. Exceptions are dog thyroid adenomas that are functional and cause hyperthyroidism or are unexpectedly identified during ultrasound examination of the ventral neck. In contrast, the more clinically common thyroid carcinomas in dogs are usually large, solid masses that cause clinical signs that can be recognized by owners and are easily palpated by clinicians.
Dog thyroid carcinomas frequently extend into the esophagus, trachea, cervical musculature, nerves, and thyroidal vessels. Distant metastasis to the lungs and retropharyngeal lymph nodes is common. Metastasis to other locations, including the liver, kidneys, heart base, bones and spinal cord, is also possible. Because of the high prevalence of malignancy, all thyroid masses discovered antemortem in the dog should be assumed to be malignant until proven otherwise.
Most dogs with thyroid tumors are euthyroid or hypothyroid; approximately 10% of dogs have functional thyroid tumors that secrete excess thyroid hormone, causing hyperthyroidism. Clinical signs of hyperthyroidism may predominate in these dogs. Hyperthyroidism may be caused by functional thyroid adenomas and carcinomas. In contrast, adenomatous hyperplasia is the most common cause of hyperthyroidism in cats but has not been described in dogs.
We would love to hear your pet's story. Please add a comment.
Thyroid adenomas in dogs are usually small, nonfunctional masses that do not cause clinical signs and are found incidentally at necropsy. Exceptions are dog thyroid adenomas that are functional and cause hyperthyroidism or are unexpectedly identified during ultrasound examination of the ventral neck. In contrast, the more clinically common thyroid carcinomas in dogs are usually large, solid masses that cause clinical signs that can be recognized by owners and are easily palpated by clinicians.
Dog thyroid carcinomas frequently extend into the esophagus, trachea, cervical musculature, nerves, and thyroidal vessels. Distant metastasis to the lungs and retropharyngeal lymph nodes is common. Metastasis to other locations, including the liver, kidneys, heart base, bones and spinal cord, is also possible. Because of the high prevalence of malignancy, all thyroid masses discovered antemortem in the dog should be assumed to be malignant until proven otherwise.
Most dogs with thyroid tumors are euthyroid or hypothyroid; approximately 10% of dogs have functional thyroid tumors that secrete excess thyroid hormone, causing hyperthyroidism. Clinical signs of hyperthyroidism may predominate in these dogs. Hyperthyroidism may be caused by functional thyroid adenomas and carcinomas. In contrast, adenomatous hyperplasia is the most common cause of hyperthyroidism in cats but has not been described in dogs.
We would love to hear your pet's story. Please add a comment.
MORE VETERINARY ARTICLES
-
Contaminated hands are the most common source of infectious disease transmission in the hospital environment. Fingernails of personnel havin...
-
Dog distemper symptoms - Canine distemper Widespread vaccination has substantially decreased the incidence of dog distemper virus infect...
-
Neoplasms originating from the larynx are uncommon in dogs and cats. More commonly, tumors originating in tissues adjacent to the larynx, su...
-
Nonneoplastic infiltration of the larynx with inflammatory cells can occur in dogs and cats, causing irregular proliferation, hyperemia , an...
-
Heartworm prophylaxis is indicated for all dogs living in endemic areas. Because sustained warm, moist conditions are important for heartwor...
-
A common cause of nutritional problems in dogs and cats is overfeeding or feeding inappropriate foods. Overfeeding can lead to rapid growth ...
-
Oral Pain 1. Fractured bones or teeth. 2. Trauma. 3. Periodontitis or caries (especially cats). 4. Osteomyelitis. 5. Other causes ...
-
Colitis in dogs have many causes (e.g., bacteria, diet , parasites ). The underlying cause is seldom diagnosed because this problem tends t...
-
Hypothyroidism is one of the most common canine endocrine disease and can be challenging to diagnose but is easily treated. Causes - Us...
-
Signs and symptoms of heartworm disease in dogs . Many dogs are asymptomatic when the disease is diagnosed by a positive routine screenin...