GIST Specialist for Trousdale Estates, CA
How much stomach comes out determines how you eat afterwards, and for most gastrointestinal stromal tumors the answer is very little. Joshua Ellenhorn, MD, FACS plans around preserving function, not just removing the tumor. Ten minutes down the hill.
- Wedge resection preserving stomach capacity wherever possible
- Clinical Professor of Surgery, Cedars-Sinai Medical Center
- Nutritional follow up arranged where a larger resection is needed
- One of the shortest drives to the office of any neighbourhood
Which Part of the Stomach Comes Out Matters More Than How Much
The stomach is not a uniform bag. Different regions do different jobs, and the functional cost of an operation depends far more on which part is removed than on the volume of tissue involved.
The upper stomach holds the valve that prevents reflux and stretches to accommodate a meal. The lining across the body of the stomach contains the acid producing cells and the cells that make intrinsic factor, without which vitamin B12 cannot be absorbed. The outlet controls the rate at which food passes into the intestine. A wedge taken from the body of the stomach disturbs none of these meaningfully. An operation removing the upper stomach or the outlet disturbs several.
This is why the choice of operation is a nutritional decision as much as an oncological one, and it is where a specialist opinion earns its keep. Because GIST rarely spreads to lymph nodes, the wide clearance a gastric cancer would demand is generally unnecessary, and a wedge resection with an intact capsule is curative for most gastric tumors. A patient who has been offered a formal gastrectomy for a GIST is frequently being offered more operation than the tumor requires, and the cost of that is measured in decades of altered eating.
Where a tumor genuinely sits somewhere awkward, several months of imatinib beforehand can often pull it away from the junction or the outlet, converting a functionally expensive operation into a modest one.
What Each Part of the Stomach Does, and What Losing It Costs
Use this to understand what your proposed operation actually involves. It is a reasonable thing to ask about before consenting.
| Region | What it does | Effect if removed |
|---|---|---|
| Body, greater curve | Holds volume. Where most GIST arise and where wedge resections are taken from | Little to none. Capacity and function preserved, normal diet within weeks |
| Upper stomach and junction | Stretches to accommodate meals, and houses the valve preventing reflux | Smaller meals needed, and reflux is common. Functionally the most expensive area to lose |
| Acid producing lining | Acid supports iron absorption and digestion | Reduced iron absorption over time, and levels worth monitoring |
| Intrinsic factor cells | Enable vitamin B12 absorption further down the intestine | Risk of B12 deficiency developing over years. Monitored and supplemented where needed |
| Outlet and pylorus | Controls the rate food leaves the stomach | Food passes faster than usual, which can produce dumping symptoms after meals |
| Whole stomach | All of the above | Substantial permanent change to how and how much you eat. Rarely necessary for GIST |
For the great majority of gastric GIST only the first row applies. If an operation involving the lower rows has been proposed, it is worth asking whether a wedge resection or preoperative medication would achieve the same oncological result.
What Recovery of Eating Actually Looks Like
After a wedge resection most people progress from fluids to soft food to a normal diet over one to two weeks, guided by comfort rather than a rigid schedule. Appetite takes a little longer to return than the ability to eat does, and some early weight loss is usual and generally settles.
After a larger resection the adjustment is real. Smaller, more frequent meals work better than three large ones initially, eating slowly helps considerably, and very sweet or very large meals are often uncomfortable early and become easier as things settle. Most people find their own pattern within a few months.
Where a substantial portion of the stomach has been removed, longer term monitoring matters: vitamin B12, iron, and vitamin D are the usual things worth checking periodically, because deficiencies develop quietly over years rather than announcing themselves. Supplementation where needed is simple, but only if someone is looking.
Referral to a dietitian should be part of the surgical plan after a larger resection rather than something you have to request. Practical guidance on structuring meals is considerably more useful than a printed handout, and ongoing unintended weight loss beyond the first couple of months is always worth reporting rather than accepting.
How Little Stomach Actually Comes Out
Recordings of real GIST resections narrated by the surgeon who performed them. Worth watching specifically to see the scale of a wedge resection against the size of the organ.
Laparoscopic Resection of a Gastric GIST
A gastric GIST removed with a cuff of wall, leaving the rest of the stomach intact.
Gastric GIST Resection: A Simplified Approach
A refined approach that shortens operating time while preserving function.
Robotic Resection of a Duodenal GIST
Duodenal GIST removed robotically with the pancreas and bile duct preserved.
How Much Stomach Stays?
Not how long the operation takes or how many incisions. Ask what proportion of the stomach remains and which regions are affected, because that is what determines how you eat for the rest of your life.
Certifications and Appointments
Two American Board of Surgery certifications, a Cedars-Sinai teaching appointment, and membership of the societies that set the standards for this disease.
- American Board of Surgery, certified in General Surgery
- American Board of Surgery, certified in Colorectal Surgery
- California State Medical License
- Florida State Medical License
Joshua Ellenhorn, MD, FACS
Dr. Ellenhorn is a surgical oncologist and Clinical Professor of Surgery at Cedars-Sinai Medical Center, and a collaborative member of the Samuel Oschin Comprehensive Cancer Institute.
Organ preservation is a recurring theme across his GIST work and it is the same principle in each site: the pancreas spared in a duodenal case, the sphincter spared in a rectal one, the stomach spared in a gastric one. What makes that possible is not technique alone but conviction about the biology, specifically that GIST does not require the wide clearance carcinomas do. A surgeon uncertain of that will take more, because taking more feels safer.
He is certified by the American Board of Surgery in General Surgery and in Colorectal Surgery, a Fellow of the American College of Surgeons, and a member of the Society of Surgical Oncology and the American Society of Clinical Oncology. He practises with the Surgery Group of Los Angeles.
What Patients Say
Reviews left by patients treated by Dr. Ellenhorn at the Surgery Group of Los Angeles.
★★★★★I was very pleased with the office staff, they were always very pleasant and helpful. I was very impressed with Dr. Ellenhorn as well. He was very friendly and addressed all my concerns regarding my surgery and aftercare and follow up.
Terry Jackson
★★★★★The staff at the Surgery Group of Los Angeles are wonderful. They are kind, very attentive, the office is clean and I did not have to wait long at all. I cannot say enough great things about Dr. Ellenhorn. He is an excellent surgeon who is highly skilled and very knowledgeable. I cannot thank him enough for all he has done for my family and I.
Erika Frank
Ten Minutes Down the Hill
Down from Trousdale to Sunset, briefly east, then south on Doheny or Robertson to 3rd Street. It is genuinely one of the shortest journeys of any neighbourhood this practice serves, around ten minutes outside of peak.
The office is in the medical plaza attached to Cedars-Sinai Medical Center, where the endoscopy suite, imaging, pathology and operating rooms are in one building. For the questions on this page it also means dietetic support after a larger resection is arranged within the same institution rather than referred out.
Patients travelling from outside the region, including Arizona and Nevada, can have imaging and pathology reviewed remotely first.
8635 W 3rd St, Suite 880W
Los Angeles, CA 90048
Monday to Saturday, 11:00am to 8:00pm
Closed Sunday
Frequently Asked Questions
Will I be able to eat normally after GIST surgery?
Why does the size of the operation matter so much for eating?
What is dumping syndrome?
Will I need vitamin B12?
Should I expect to lose weight?
Do I need to see a dietitian?
Are there foods I have to avoid permanently?
How far is your office from Trousdale Estates?
Ask Which Part of the Stomach Is Coming Out.
For most gastric gastrointestinal stromal tumors the answer is a small wedge and no lasting change to how you eat. If a larger operation has been proposed, it is worth a second opinion first.
