Digestive masses in cats
A mass in the stomach or intestines of a cat is usually due to a tumour, and most of them are cancerous. The outcome varies a lot depending on where the tumour is, what type it is and whether it has spread. These tumours are more common in middle-aged and older cats.
Tumours of the stomach and intestines are uncommon in cats. Cancers of the stomach make up about 1% of all cancers in cats, and those of the intestines make up less than 10%. In most cases, a specific cause can’t be identified, but environment, food, genetics and other diseases may all play a role. The majority of intestinal tumours in cats develop in the small intestine. Early diagnosis and treatment improve the chance of a good outcome.