**Surgeon operating on patient’s abdomen**.
**Surgeon operating on patient’s abdomen**.

More than 30,000 Americans are diagnosed with stomach cancer annually. Early detection allows for potential cures, but advanced cases, where the cancer has spread beyond the stomach wall, shift treatment toward control, symptom management, and prolonging life.

Recent surgical innovations at Mayo Clinic now enable patients to retain more stomach function after treatment. Dr. Travis Grotz, a surgical oncologist, describes how these methods enhance quality of life for individuals requiring total or partial stomach removal.

How stomach cancer surgery works

Surgery remains a cornerstone of treatment, though the procedure varies based on tumor location and stage. In severe cases, surgeons perform a total gastrectomy, excising the entire stomach. The esophagus is then reconnected to the small intestine, allowing food to bypass the stomach entirely.

Patients who undergo full removal often face strict dietary limitations afterward. To mitigate this, surgeons fashion a J-pouch from the jejunum, a segment of the small intestine reshaped into a storage reservoir. This modification gradually restores meal capacity, letting patients consume larger portions over time.

The J-pouch technique has long been standard in colorectal surgery but is now being adopted more frequently for stomach cancer patients. At Mayo Clinic, this reconstruction is routinely offered to select candidates as an alternative to conventional approaches.

Preserving stomach function

Scientists are also developing ways to preserve portions of the stomach during surgery. Many stomach cancers originate near the esophagus, but saving the lower stomach has historically been challenging. Mayo Clinic surgeons have refined techniques to remove upper tumors while sparing the lower stomach.

This method helps patients avoid complications from total removal while still effectively targeting the cancer.

Beyond surgical techniques, researchers are exploring additional strategies to improve long-term survival. Clinical trials at Mayo Clinic are testing targeted therapies and immunotherapies for patients whose cancer has progressed despite initial treatment. These studies aim to identify biomarkers that predict response to specific drugs, allowing for more personalized care.

Public awareness campaigns remain critical, as many patients still present with advanced-stage disease due to delayed symptoms. Mayo Clinic’s oncology division collaborates with primary care providers to educate communities about warning signs, including persistent indigestion, unexplained weight loss, and abdominal discomfort.

Despite progress, challenges persist. Post-surgical nutritional deficiencies remain common, requiring long-term vitamin supplementation. Mayo Clinic’s nutritionists work closely with surgeons to develop tailored meal plans that compensate for reduced stomach capacity. Some patients also experience reflux or dumping syndrome, conditions that further complicate recovery.