Cancer

Fatty tissue tumors are masses of cells which develop under the skin in cats and are primarily composed of fat. They are soft to the touch, round, and not anchored, so they tend to move freely when pressed.

Cancer of the prostate gland occurs when collections of cells of the prostate divide uncontrollably. Prostatic tumors are very rare in cats, but more common in dogs and because of this, much of what we know about this condition in cats comes from data about dogs.

Cutaneous hemangiosarcoma (HSA) is a rare malignant skin cancer in cats that arises from abnormal cells within blood vessels. Cutaneous HSA usually arises on the head and ears in lightly haired areas.

Fibrosarcomas are a group of malignant tumors (cancer) that originate in fibrous connective tissue. This type of tumor develops slowly and does not often spread, but can cause extensive tissue damage.

Adenocarcinoma is cancer of glandular tissue and it can develop almost anywhere in the body. Common locations for adenocarcinomas in dogs include the anal glands, mammary tissue, and prostate.

Hemangiosarcoma is cancer of the blood vessel walls. Visceral hemangiosarcoma is when this cancer occurs internally. Hemangiosarcoma is a highly aggressive and metastatic cancer type characterized by fragile, blood-filled lesions in the organs.

Rhabdomyosarcoma (RMS) in cats is a malignant tumor originating from the striated muscle cells (muscles normally attached to bones), occurring wherever there are striated muscle fibers. 

Melanoma is a tumor which develops from the cells responsible for skin pigmentation (melanocytes). Melanomas can be either benign or malignant and can be found on the skin, mouth, and eyes.

Melanomas are tumors of pigment-producing cells, known as melanocytes. Formation of melanoma involves a complex combination of genetic and environmental factors and may be malignant or benign. Feline melanoma usually develops in the mouth, eyes, or skin.

Mast cells are part of the immune system. Uncontrolled growth of these cells leads to mastocytoma, or mast cell tumors (MCTs), which are the most common type of skin tumor in dogs. These tumors commonly present as a lump in or under the skin.

Feline osteosarcoma (OSA) is a type of cancer that arises from uncontrolled growth of bone cells. OSA is the most common type of bone cancer in cats. The underlying cause of OSA is unknown, but previous trauma, bone infection, or radiation are thought to be possible contributing factors.

Tumors of the eye, defined as abnormal cell growth in or around the eyes, are uncommon in cats. Most eye tumors are malignant, aggressive, fast-growing, and likely to spread throughout the body where they have serious consequences.

Hemangiosarcoma (HSA) describes an aggressive cancer of the blood vessels. The visceral form leads to tumors inside the body, as opposed to the skin (cutaneous) form which has its own unique characteristics.

Osteosarcoma is the formation of a malignant tumor in the bones. It is a highly metastatic cancer with a median survival rate of 2-4 months without treatment and 8-12 months with treatment. This is the most common type of bone cancer in dogs and is most prominent in large breeds and older pets.

Cutaneous hemangiosarcoma is cancer of the blood vessels of the skin. This type of tumor is generally fragile, blood-filled, and can be found anywhere on the skin.

Mast cells are white blood cells which regulate histamine response in the body and can be found in the skin, spleen, and intestines. Mast cell tumors in cats are masses formed by the rapid replication of mast cells.

Injection site sarcoma is a rare condition in cats where a cancerous mass develops in the soft tissue around an injection site. While all injections initially cause a small bump, masses that are present for over 3 months, greater than 2cm in diameter, or grow rapidly require urgent care.

Urinary tract cancer is an extremely rare condition in cats, with no known risk factors. Can develop in the bladder, kidneys, ureters (tube connecting kidneys to bladder), urethra (tube where urine is expelled from the body), and prostate gland (in males).

Cancer of the lower urinary tract is uncommon in dogs. The lower urinary tract consists of the bladder, urethra (tube that carries urine from the bladder to outside the body), and in males the prostate gland.

Tumors of the liver describe cancerous growths of the liver, bile ducts, and gallbladder. Dogs with liver tumors often show no symptoms, and diagnosis often occurs while performing tests for other conditions.

Squamous cell carcinoma (SCC) is a cancer of the flat cells that line many tissues in cats, such as the skin, mouth, and esophagus. SCC occurs most commonly where hair is sparse or light-colored as there is less protection from UV rays.

Mammary gland tumors are masses that result from uncontrolled cell growth in the mammary (breast) tissue. They are common in older, unspayed cats and are usually malignant.

An eyelid tumor is a mass of rapidly growing cells located anywhere on the eyelid from the base of the lashes to the topmost edge of the lid. Masses can be benign or malignant but in cats, eyelid tumors are usually malignant.

A tumor is an abnormal and uncontrolled cell growth that can appear anywhere in the body. The eyelid is a very common site for tumors in dogs, especially as they age.

Mammary gland tumors (MGTs) result from the uncontrolled growth of mammary gland (breast) cells, which group together to form lumps in the mammary glands.

Jaundice, also known as icterus, is yellowing of the skin, gums and whites of the eyes. Horses showing jaundice require prompt veterinary assessment, as causes range from not eating to liver dysfunction or excessive breakdown of red blood cells

Lymphoma (lymphosarcoma) is a common form of cancer that causes an uncontrolled growth in the number of lymphocytes (white blood cells).

Lymphomas (lymphosarcomas) are cancers that are derived from lymphocytes - infection-fighting white blood cells.

Feline leukemia virus (FeLV) is one of the most prevalent infectious diseases and is the most common cause of cancer in cats. 

A Histiocytoma is a growth that develops on the surface of a dog's skin. Histiocytomas are benign, non-cancerous nodules, commonly known as round cell tumors.