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A malignant tumour is a cancerous tumour, and it contains cells that have the ability to spread and invade surrounding tissues and organs. This type of tumour can cause damage that is potentially fatal.


Some of the causes of tumors in a dog include old age, poor oral care and breed of the dog, explains WebMD. Dogs that have not been spayed also have a higher instance of mammary gland tumors.


Not all brain tumors are cancerous. Primary brain tumors, which are tumors that originate in the brain, can be either non-cancerous or cancerous, according to Johns Hopkins Medicine. Secondary brain tumors start as cancer somewhere else in the body before spreading to the brain, so they are always c


All cancerous tumors eventually cause pain if they aren't treated, but they are usually painless at first. Some tumors cause pain early in the progression of the disease, such as bone tumors and testicular tumors.


Dog tumors can be treated, and the type of treatment largely depends on the type of tumor. There are three common types of tumors that affect dogs: fatty skin tumors also known as lipomas, benign (noncancerous) tumors and malignant tumors.


Benign tumors are the result of abnormal cell growth that can be caused by factors such as radiation exposure, genetic mutations, infections, stress and trauma, explains WebMD. Cancerous tumors are caused by a traveling cancer cell in the body that damages tissues and begins dividing, notes Medical


A biopsy is one common method for identifying a tumor, according to the Mayo Clinic. To have a biopsy, a patient has a physician remove a small amount of tissue for a pathologist to examine it under a microscope.


Various websites, including the American Cancer Society, WebMD and Mayo Clinic have photos of skin cancer tumors for the public to view. While these photos aren't meant to provide a medical diagnosis, they are a good basis for users to determine if a mark or bump on the skin should be evaluated by a


Cancer markers and tumor markers are the same thing. These markers are substances found in the blood, urine or other body fluids, and their levels indicate the presence of certain types of cancer, according to the National Cancer Institute. However, there are also noncancerous conditions that can af


The average total lung tumor dimension measures 3 inches in size, as stated by the University of Texas Southwestern Medical Center. Total tumor dimension is a measure that includes both the size of the primary tumor as well as other ones located in various sites of metastatic disease.