Hello,
Thank you for the additional information. Some of the information I am providing, you already know, however I wanted to give you as much information about tumor (both cancerous and non-cancerous). Since I am not quite sure what test your vet did; such as bloodwork or a biopsy I am again giving you more info.
Ear tumors are growths associated with the ear. The most common include squamous cell carcinoma, ceruminous gland adenoma or adenocarcinoma, sebaceous gland tumor and basal cell tumor.
Depending on the tumor type there may or may not be an underlying cause. Chronic inflammation may predispose to tumor formation and prolonged sunlight exposure may predispose certain tumors.
1) Ceruminous gland adenocarcinoma. These tumors are seen most commonly in middle-aged to older cats with light colored fur or skin and occurs after exposure to sunlight.
2) Basal cell tumor. These tumors generally affect middle aged to older cats and are most common in Siamese cats.
3) Sebaceous gland tumors. They are more common in middle-aged to older dogs than cats, with no sex predilection
Early in the illness, many individuals are have no clinical signs, and tumors are often incidental findings. Things to watch for:
1) Skin changes on the ear
2) Crusts, ulcers or proliferative (excessive growth) tissue
3) Bleeding
4) Odor
5) Discharge
6) Nodular masses
7) Large growths filling the ear canal
8) Vestibular (balance) signs
Diagnosis information:
1) Baseline tests, to include a complete blood count (CBC), biochemical profile, and urinalysis, are usually within normal limits.
2) Thoracic (chest) radiographs (X-rays) should be taken to rule out lung metastasis (spread).
3) Skull radiographs may be helpful in evaluating invasiveness or surrounding tissue involvement of tumors associated with the ear canal.
4) CT scan may be helpful in accessing extent of tumor and is necessary prior to radiation therapy.
5) Biopsy is necessary for a definitive diagnosis.
If your vet does think that it is a cancerous tumor, I would defintely try to find a vet that specialized in cancerous tumor in cats so that you can have a second opinion and make a decision from his/her findings.
I hope this helps. If you need further information, please feel free to contact me.
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