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Cancer in cats can occur in any location or body system, [3] and most symptoms can be detected externally. [2] While each type of cancer has its own distinctive symptoms, most indicate their presence by the occurrence and the prolonged presence of any common symptom. [1] Some of the general symptoms of cancer in cats are: [3]
Siamese cats and Japanese breeds seem to have increased risk, [19] and obesity also appears to be a factor in tumor development. [20] Malignant tumors make up 80 to 96 percent of mammary tumors in cats, almost all adenocarcinomas. [21] Male cats may also develop mammary adenocarcinoma, albeit rarely, and the clinical course is similar to female ...
Feline diseases are often opportunistic and tend to be more serious in cats that already have concurrent sicknesses. Some of these can be treated and the animal can have a complete recovery. Others, like viral diseases, are more difficult to treat and cannot be treated with antibiotics, which are not effective against viruses.
The most common type of cancers affecting the animal's nose are carcinomas and sarcomas, both of which are locally invasive.The most common sites for metastasis are the lymph nodes and the lungs, but can also include other organs.
The symptoms depend on the tumor's location and degree of invasion. For example, tumors in the gastrointestinal tract may cause vomiting, diarrhea, or weight loss. Tumors in the mouth may cause bad breath, difficulty swallowing, or lack of appetite. Tumors arising in the peripheral nerves may cause pain, lameness, or neurological symptoms.
The likelihood of the development to cancer is related to the degree of dysplasia. [11] Dysplasia is the earliest form of precancerous lesion which pathologists can recognize in a pap smear or in a biopsy. Dysplasia can be low grade or high grade. The risk of low-grade dysplasia transforming into high-grade dysplasia, and eventually cancer, is low.
The most common symptoms in cats are polyuria, polydipsia, and polyphagia due to diabetes mellitus; however polyphagia can be the result of growth hormone excess itself. Other symptoms in both cats and dogs include ataxia , asthenia , hepatomegaly , visceromegaly , enlargement of head and distal extremities, heart murmur , degenerative atrophy ...
Dysplasia is an abnormal type of excessive cell proliferation characterized by loss of normal tissue arrangement and cell structure in pre-malignant cells. These early neoplastic changes must be distinguished from hyperplasia , a reversible increase in cell division caused by an external stimulus, such as a hormonal imbalance or chronic irritation.