Squamous Cell Carcinoma of the Nasal Planum in Cats
Squamous cell carcinoma is a malignant tumor of the squamous epithelial cells. In this case, it is a tumor of the nasal planum or the tissues in the nose pad. This tumor is more common in cats than dogs. Exposure to inhaled chemicals increases the risk of nasal tumors, including indoor use of coal, cigarettes, and air fresheners.
Symptoms and Types
- This tumor progress slowly, often starting as a superficial crust and scab
- Decreased air through the nose (i.e., more mouth breathing)
- Sneezing and reverse sneezing (i.e., sudden, involuntary inward breaths)
- Nosebleeds (epistaxis)
- Nasal discharge
- Swelling of involved area, including swelling of the eye, loss of sight
- Facial deformity
- Excessive tears from eyes (epiphora)
- Neurological signs (from pressure on brain) – seizure, disorientation, behavioral changes
- Exposure to ultraviolet light
- Absence of protective pigment
- Exposure to toxic inhalants
You will need to give your veterinarian a thorough medical history of your cat's health and onset of symptoms. Your veterinarian will perform a physical examination with full laboratory testing, including complete blood tests, biochemical profiles, and urinalysis. The results of these tests are usually normal in affected patients. While metastasis is rarely seen in the lungs, your veterinarian may take thoracic X-rays to evaluate for metastasis into the lungs. Other conditions your doctor will look for are dental diseases, rhinitis (bacterial and viral), aspergillosis, or cryptococcosis.
For an appropriate diagnosis to be made, your veterinarian will need to take tissue and fluid samples from the affected area. Your veterinarian will also take samples from the lymph nodes to detect whether metastasis is occurring. Magnetic resonance imaging (MRI) and computed tomography (CT) scans may provide more information about the extent of the tumor, as well as to help in surgical resection of the tumor.
A treatment of certain neoplasms that is administered using an x ray
The prediction of a disease’s outcome in advance
An involuntary action in which the muscles contract; caused by a problem with the brain.
Pertaining to the chest
An in-depth examination of the properties of urine; used to determine the presence or absence of illness
Something that becomes worse or life threatening as it spreads
The excessive production of tears
Medicines that can be inhaled
Small structures that filter out the lymph and store lymphocytes
Anything that looks different from what is considered to be normal and healthy for that species