Tumors consist of randomly multiplying cells that can show benign or malign growth.
Symptoms change depending on the size of the tumor. The early stages of tumor growth can remain undetected for a long period of time. Advanced growth usually produces persistent unilateral discharge from the nose that may contain traces of blood. Sneezing occurs in some cases. Raspy and snaring sounds may be heard during breathing. Very aggressive tumor growth can cause a deformation of the entire nose.
Tumors of the nose are rare and usually affect dogs middle-aged and older. The most common tumor of the nasal cavity is lymphoma, which originates from a certain group of immune-cells, the lymphocytes. Some rare types are: adenocarcinoma, that originates from glandular tissue, osteosarcoma, that originating from bone tissue, and fibrosarcoma, that originates from connective tissue. Prognosis is based on the state of the tumor, its extent, and whether or not it has already spread into other parts of the body.
Tumors may be detected by an x-ray or through an endoscopy. A biopsy can reveal the nature of the growth and whether or not it is aggressive. Small and non-invasive tumors can be halted in their development with anti-inflammatory drugs. In well-defined tumors, surgical excision can be successful. Many tumors respond to chemotherapy even though this treatment is only offered by specialized clinics.
If your dog is showing symptoms of a nasal tumor, consult a veterinarian.