How Common Are Tumors in Rats?
WouterRats may develop tumors in a variety of different places on their body. These tumors can be either benign or malignant. Most tumors will be visible as lumps, and are easy to feel. They are commonly found under the armpits and in the groin. It is important to check your rat for lumps at least once a week, even if it is young. The good news is that most tumors are easily removed when they are small, and many do not return.
Most tumors in rats are benign, but malignant tumors can develop in some cases. Tumors are most common in older female rats, although male rats can also develop them. Rats that are obese are at a higher risk of developing tumors. When they grow out of control, they can impede the rat’s ability to move. They can also become ulcerated and infected.
Female rats are at higher risk of developing tumors in their pituitary and mammary glands. These tumors may lead to menopause, and the hormone prolactin is essential in treating this type of tumor. Males may also develop tumors in their uterus and ovary glands.
Most tumors in rats are benign mammary fibroadenomas. Rats have extensive mammary tissue, and tumors can be located anywhere along the belly side of the body. They are common in both male and female rats and can develop as early as a few months of age. Most tumors are benign and can be removed surgically. In some cases, the tumors respond to medical therapy, such as prednisone.
