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Intestinal cancer is fairly rare in dogs. When it does occur, though, intestinal tumors are normally located in the colon and rectum, though sometimes they can be found in the small intestines. Intestinal tumors can be benign or malignant, though adenocarcinomas are malignant.
Changes in weight, appetite, and energy levels are all potential signs of colon cancer in dogs. This umbrella term is sometimes used to refer to various types of malignant tumors of the large intestine, rectum, or anus, with the most common being adenocarcinoma.
What Causes Intestinal Cancer in Dogs? What are the Symptoms of Intestinal Cancer in Dogs? Diagnosing Intestinal Cancer in Dogs ; How do You Treat Intestinal Cancer in Dogs? What can I do to Prevent Intestinal Cancer in Dogs? How Long Can Dogs Live With Intestinal Cancer? Can Dogs Survive Intestinal Cancer?
Symptoms of Intestinal Cancer in Dogs and Cats. Intestinal cancers in dogs and cats have a wide range of clinical signs, depending on the exact location of the cancer or tumor. Primary signs include vomiting, diarrhea, weakness, decrease in appetite, and weight loss.
Intestinal tumors may be either benign (non-cancerous) or malignant (cancerous). Malignant tumors are invasive and prone to metastasize (spread to other areas of the body). Most tumors of the intestinal tract are malignant. In dogs, three types of intestinal tumors are seen: lymphoma, adenocarcinoma, and leiomyosarcoma.
What Are the Signs of Cancer in Dogs? There are many different symptoms of cancer in dogs, depending on the location of the cancer and the type.
The most common clinical signs of rectal tumors include straining to have bowel movements and blood in the stools. In some cases, the bleeding can be fairly extensive. If the tumor is polypoid and located near the anus, it may intermittently protrude through the anal opening.
In dogs, the colon is the most common site for adenocarcinoma, followed by the rectum and small intestine (Patnaik et al., 1980; Church et al., 1987). Colorectal adenocarcinomas demonstrate either a pedunculated, cobblestone or annular morphology, and these forms carry prognostic significance.
Canine Gastrointestinal Adenocarcinoma. The incidence of intestinal tumors in dogs is low in comparison to people. These tumors tend to occur in older dogs (>9 years) and signs vary from anorexia, vomiting, weight loss, lethargy to diarrhea, depending on the location of the tumor.
What Are The Clinical Signs? Signs vary with the location of the tumor, tumor type, and distribution of disease. Affected pets can show weight loss, decreased appetite, vomiting, and/or diarrhea. There can be evidence of fresh or digested blood in the vomit and/or feces.