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Tumors that develop within the liver may be either benign (noncancerous) or malignant (cancerous). Tumors can start in the liver, or spread to the liver from another cancer in the body. Malignant liver tumors have been reported to metastasize to other organs such as regional lymph nodes, lungs, kidneys, pancreas, spleen and others.
A ceruminous adenoma is a benign glandular neoplasm which arises from the ceruminous glands located within the external auditory canal. These glands are found within the outer one third to one half of the external auditory canal, more common along the posterior surface; therefore, the tumor develops within a very specific location. [2] [3] [4]
Benign tumors take several years to develop and are more difficult to detect due to their freely movable nature. [6] The only indicator of benign tumors is self-trauma of a form called lick granuloma or "boredom sores", [7] which can be caused by excessive licking by the cat. [6] This is a sign that the cat is suffering from anxiety. [8] [9]
Soft tissue sarcomas are often detected as a firm mass located on the trunk, limbs, or oral cavity. 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.
Chemotherapy is the mainstay of treatment for lymphoma in cats. Most of the drugs used in dogs are used in cats, but the most common protocol uses cyclophosphamide, vincristine, and prednisolone. [22] Gastrointestinal lymphoma has also commonly been treated with a combination of prednisolone and high dose pulse chlorambucil with success. [27]
Liver tumors (also known as hepatic tumors) are abnormal growth of liver cells on or in the liver. Several distinct types of tumors can develop in the liver because the liver is made up of various cell types. [1] Liver tumors can be classified as benign (non-cancerous) or malignant (cancerous) growths.
Hemangiosarcoma is a rapidly growing, highly invasive variety of cancer that occurs almost exclusively in dogs, and only rarely in cats, horses, mice, [1] or humans (vinyl chloride toxicity). It is a sarcoma arising from the lining of blood vessels; that is, blood-filled channels and spaces are commonly observed microscopically. A frequent ...
Both benign and malignant tumors are seen in dogs. Common benign tumors include lipomas , non-viral papillomas , sebaceous gland adenoma, and perianal gland adenomas . Frequently seen cancers include lymphoma , melanoma , mast cell tumors (which are considered to be potentially malignant, even though they may have benign behavior), [ 20 ] and ...