Overview
A targeted resection for difficult lower-stomach disease.
Gastric antrectomy is the smallest of the distal stomach resections — it removes only the antrum, the bottom 30–40% of the stomach, along with the pylorus. It is a focused operation, used now mostly for refractory peptic ulcer disease that has failed modern medical and endoscopic therapy, for gastric outlet obstruction from chronic ulcer scarring, and for selected small benign or early-stage tumors of the antrum where a larger resection would be more than needed. The era of routine acid-blocking surgery has largely ended thanks to proton pump inhibitors and H. pylori treatment, but a small number of patients still benefit.
Reconstruction is typically Billroth I — the most physiologic option — connecting the remaining stomach directly to the duodenum. When the anatomy does not allow a tension-free Billroth I, we use a Billroth II or Roux-en-Y. The operation is well suited to laparoscopic and robotic technique because the resection is small and the anatomy is predictable. Recovery is typically faster than for a larger gastrectomy, with most patients home in three to five days.
Who is a candidate?
Patients with refractory peptic ulcer disease — ulcers that have not healed with proton pump inhibitors, H. pylori eradication, and endoscopic therapy — are the most common indication. We also consider antrectomy for chronic gastric outlet obstruction caused by ulcer scarring, for very small benign antral tumors, for early small antral GISTs where a wedge is not feasible, and for selected gastric neuroendocrine tumors. Endoscopy with multiple biopsies is the cornerstone of preoperative planning to confirm benign disease before opting for the smaller resection.
How we perform it
You are asleep under general anesthesia. Four to five small ports are placed in the upper abdomen. We mobilize the antrum by dividing the right gastric and right gastroepiploic vessels close to the stomach wall. The duodenum is divided just past the pylorus and the stomach is transected at the proximal antrum. The specimen is removed and the remaining stomach is reconnected to the duodenum (Billroth I) or to a loop of jejunum (Billroth II) using staplers and selective hand-sewn reinforcement.
Recovery
Most patients stay 3–5 days in the hospital. We start clear liquids on day 1, advance to a soft diet by day 3–4 and most patients are eating soft regular food by 2 weeks. Eating pattern is small frequent meals at first, gradually normalizing over 1–2 months. Weight loss is generally modest (less than 10% of body weight). Most patients return to office work in 2 weeks and to full activity in 3–4 weeks.
Why Florida Surgical
Antrectomy is a precision foregut operation. Dr. Shaw is fellowship-trained in HPB and surgical oncology and performs it most often robotically, where the precise visualization is well suited to the close-quarters dissection around the pylorus and duodenum. The surgeon who consults is the surgeon who operates and follows you for life — so your full history is in one head, not handed off between providers.
Frequently asked questions
Who still needs an antrectomy in the era of acid-blocking medications?
Far fewer patients than 30 years ago — modern proton pump inhibitors, H. pylori treatment, and endoscopic therapy have made surgery rarely needed for ulcer disease. We still do antrectomy for refractory ulcers that have not responded to medication and endoscopy, for gastric outlet obstruction from chronic scarring, and for very selected benign and early-stage antral tumors.
How is it different from a distal gastrectomy?
Antrectomy is the smallest of the distal stomach operations — it removes only the antrum (the bottom 30–40%) and the pylorus. Distal gastrectomy removes the antrum plus the lower body. For cancer we usually need at least a distal gastrectomy; antrectomy is reserved for ulcer disease and selected small benign tumors.
Can it be done laparoscopically?
Yes. Laparoscopic and robotic antrectomy are well established for benign disease. The smaller resection, the easier approach, and the typically clean anatomy make it well suited to minimally invasive technique.
Will I have dumping syndrome?
Up to 20–30% of patients have some dumping symptoms — sweating, lightheadedness, or rapid stooling after meals — in the first few months. Most cases resolve with simple dietary adjustments (smaller meals, less simple sugars, no large drinks with meals). True long-term severe dumping is uncommon.
What is the recovery like?
Most patients stay 3–5 days in the hospital and return to normal activity in 3–4 weeks. The eating pattern adjusts over the first 1–2 months — smaller, more frequent meals at first — and then most patients are eating normally.