Smooth muscle is one of the three muscle groups in the body, along with skeletal muscle and cardiac muscle. Diseases related to smooth muscle are quite rare, typically leiomyomas, including cutaneous leiomyomas and uterine leiomyomas.

Although the small intestine is a large part of the digestive tract, small intestine tumors are very rare, accounting for only about 3% to 5% of all digestive tract tumors. Unlike esophageal, gastric and colorectal tumors, most small intestine tumors are diagnosed only by morphological examination. With current medical conditions in Vietnam, X-ray and computed tomography are the best and most common means of diagnosing small intestine tumors.

Benign tumors are a common condition and can happen to anyone, including men and women. However, unlike melanoma, they usually do not cause cancer or invade other areas of the body. Treatment options for a benign tumor will depend on the extent of the tumor and its location in the body.