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.
Benign stomach tumors are uncommon, says the NCBI. Of the stomach tumors discovered, only 5 percent are benign. Benign tumors of the duodenum, the lower part of the stomach that connects to the small intestine, are between 10 and 20 percent of tumors. Still, some of these tumors can turn malignant, so it is good practice to find and remove them.
There are several types of benign stomach tumors, according to the NCBI, including epithelial tumors (hyperplastic polyps and adenomas), leiomyomas (found in older males) and neurogenic tumors (found in both the stomach and the duodenum). These tumors can also be removed by being burned away by lasers or through the miniaturized instruments utilized during a laparoscopic procedure.
Most stomach cancers are adenocarcinomas, says the American Cancer Association. They arise from the mucosa, or the deepest layer of the stomach. Other types of stomach cancers are lymphomas, carcinoid tumors and gastrointestinal stromal tumors, which are sometimes benign. Treatment for stomach cancers includes surgery, radiation therapy, chemotherapy and drugs that specifically target cancer cells.