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.
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
As of 2015, images of various types of tumors in dogs are available on the veterinary medicine section of About.com. The Long Beach Animal Hospital website devotes a page to images and information on mast cell tumors in dogs.
A brain tumor is tissue mass that is formed by abnormal cells, defines WebMD. Tumors do not die like normal cells do. Brain tumors can be both noncancerous or malignant. Cancerous brain tumors grow faster than noncancerous ones, and they attack surrounding tissue.
Symptoms of a brain tumor include unexplained nausea or vomiting, changes in behavior or personality, headaches that gradually increase in frequency and severity, and new onset or change in pattern of headaches, according to Mayo Clinic. Brain tumors may also cause vision problems such as double vis
Mayo Clinic indicates primary brain tumors are caused by normal cells that mutate to form a mass of abnormal cells in the brain. Secondary brain tumors are more common, and these types of tumors form after cancer from another part of the body spreads to the brain.
Treatment of stomach tumors range from removing the tumor endoscopically if it is small, to an operation that removes the pancreas and the duodenum, according to the National Center for Biotechnology Information (NCBI). The latter procedure is done if the doctor suspects that the tumor is cancerous.
A tumor in the stomach may be the result of stomach or gastric cancer, according to WebMD. However, there are some known instances of benign stomach tumors.
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.