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| Cancer in cats ： ウィキペディア英語版 |
Cancer in cats
Similar to humans, cancer is the leading cause of death among older cats. It is caused by uncontrolled cell growth, and affects a wide range of cell types and organs in the body. Feline cancer initially manifests as a lump or bump on any parts of the body. It rapidly grows in the affected cell; attaches itself to the tissue under the skin in that area; and, depending on the tumour, it can spread to other parts of the body.〔(【引用サイトリンク】 Feline Cancer Resources )〕 Although cancer accounts for approximately 50% of feline deaths each year, it can be successfully treated if diagnosed early.
While the causes of cancer in cats are unknown, feline leukemia virus is suspected to be a prime contributor.〔 Other factors suspected to increase rates of feline cancer include toxins from the environment, second hand smoking, excessive grooming, or licking parts of the body that have been in contact with an environmental toxin.〔
Cancer can be detected early on by observing for certain signs and symptoms. Common diagnosing methods include physical examination, x-rays, ultrasounds, cytology, blood tests, urine tests, and nuclear scans. Depending on the type of cancer and its level of progress, surgery, radiation, chemotherapy, or immunotherapy may be utilized to treat for cancer. Although research has been slow for causes and treatment of feline cancers, there have been advancements in radiation therapy, as well as newer and improved chemotherapy procedures.〔
==Signs and symptoms==
Although cats are diagnosed with cancer at lower rates than dogs or humans, the types of cancer and symptoms are identical. Cancer in cats can occur in any location or body system, and most symptoms can be detected externally.〔 However, to reach a definitive diagnosis, further tests such as blood and urine tests, cytology, and biopsy are required. Due to the excessively aggressive nature of cancer in cats, it is advisable for owners to take their cat to a veterinarian for an examination following occurrence of any symptom to prevent spreading.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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