GIST Specialist for Marina Peninsula, CA
A great deal of what determines how quickly you recover from gastrointestinal stromal tumor surgery happens in the first forty eight hours, and most of it is decided by protocol rather than luck. Joshua Ellenhorn, MD, FACS explains what those two days should look like.
- Enhanced recovery protocols rather than traditional post-op practice
- Clinical Professor of Surgery, Cedars-Sinai Medical Center
- Opioid sparing pain control with abdominal wall blocks
- Eating and walking the same day for most gastric resections

The First Forty Eight Hours Are Largely Designed in Advance
Patients tend to assume recovery is something that happens to them, determined by constitution and good fortune. In reality a large part of it is set by a series of decisions made before you arrive, and the difference between old practice and current practice is substantial.
The traditional approach was to fast the patient for a long period beforehand, place a tube through the nose into the stomach, leave a drain in the abdomen, wait for bowel sounds before allowing fluids, keep them in bed while the pain settled, and control that pain with opioids. Each of those steps sounds cautious. Collectively they produce a patient who is dehydrated, nauseated, drowsy, immobile, and consequently at higher risk of clots and chest infection, staying several days longer than necessary.
Enhanced recovery reverses most of it. Shorter fasting with a carbohydrate drink beforehand. Local anaesthetic blocks placed in the abdominal wall during the operation so that far less opioid is needed afterwards. No drain and no nasogastric tube unless there is a specific reason. Fluids the same evening and food the next day. Out of bed the same day. Discharge judged against criteria rather than a calendar.
None of this is experimental and none of it is about pushing patients. It removes the obstacles that were slowing recovery down.

What the First Two Days Usually Look Like
Typical for a laparoscopic gastric wedge resection. Larger operations follow the same principles on a longer timeline.
| When | What happens | Why |
|---|---|---|
| Before surgery | Clear fluids permitted until a few hours beforehand, often with a carbohydrate drink | Arriving depleted and dehydrated slows recovery and worsens nausea |
| During surgery | Local anaesthetic blocks in the abdominal wall, body temperature maintained, fluids balanced carefully | Blocks placed now mean far less opioid needed later, which is the key to everything that follows |
| Evening of surgery | Sitting up, walking to the bathroom, sips of fluid | Early movement reduces clot and chest complication risk more than any medication does |
| First night | Regular paracetamol and anti-inflammatories where safe, opioid only as needed | Keeping the bowel working and the mind clear, which is what allows eating and walking |
| Morning after | Light food, urinary catheter removed if one was used, walking several times | Each of these is a step toward the discharge criteria rather than a milestone in itself |
| Day one to two | Discharge for most patients once criteria are met | Pain controlled on tablets, eating, passing urine, mobile enough to manage at home |
Drains and nasogastric tubes are used selectively rather than routinely. If one is proposed, it is reasonable to ask what specific purpose it serves in your case.

The Biggest Recovery Decision Is Made Before Any of This
Everything above helps at the margins. What dominates is how large the operation was, and that is determined by the surgical plan rather than the recovery protocol.
GIST arises from the interstitial cells of Cajal within the wall of the digestive tract, and it is a sarcoma rather than a carcinoma. Because it rarely spreads to lymph nodes, the wide nodal clearance a gastric adenocarcinoma requires is generally unnecessary. For most gastric tumors that means a wedge resection through incisions under a centimetre, which is why the timeline in the table above is measured in days rather than weeks.
A formal gastrectomy performed for a tumor that needed a wedge, or an open operation performed where laparoscopy would have served, costs far more recovery than any protocol can recover. Where a tumor is genuinely too large or awkwardly placed, several months of imatinib beforehand frequently shrinks it enough to allow the smaller operation. That decision, made weeks before surgery, does more for your first forty eight hours than anything done during them.
Why These Operations Recover Quickly
Recordings of real GIST resections narrated by the surgeon who performed them. The scale of access visible here is the reason same day mobilisation is realistic.
Laparoscopic Resection of a Gastric GIST
A gastric GIST removed through small incisions with the capsule kept intact.
Gastric GIST Resection: A Simplified Approach
A refined approach explicitly aimed at shortening the operation, which reduces anaesthetic time and speeds recovery.
Robotic Resection of a Duodenal GIST
Duodenal GIST removed robotically with the pancreas and bile duct preserved, avoiding a far larger procedure.
What Is the Discharge Plan?
Ask whether a drain or nasogastric tube is planned and why, when you will be allowed to eat, and what has to be true before you go home. Specific answers indicate a specific plan.
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.
One of his published operative videos is described as a simplified approach, and the substance of that title is relevant here. Removing unnecessary steps from an operation shortens anaesthetic time, reduces tissue handling, and is a large part of why a cancer resection can be a one night stay. That kind of refinement only comes from performing the same operation many times and noticing which parts of it were never earning their place.
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.
★★★★★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
★★★★★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
From Marina Peninsula
Via Marina to Washington and east to Lincoln, then north and east along Venice or Olympic. The 90 east to the 405 north and the 10 is quicker off peak. Twenty five to thirty minutes generally, with extra time needed getting off the peninsula on summer weekends.
The office is in the medical plaza attached to Cedars-Sinai Medical Center, where surgery takes place. For the protocols described on this page, being operated on within a large hospital rather than a standalone surgical centre matters: anaesthesia, pain services and nursing staff working to the same enhanced recovery pathway every day is what makes it routine rather than aspirational.
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 starved before surgery?
Will I have a drain or a tube down my nose?
When will I be allowed to eat?
How is the pain managed without heavy opioids?
Why does reducing opioids matter so much?
When will I get out of bed?
What has to be true before I go home?
How far is your office from Marina Peninsula?
Ask What the First Two Days Will Look Like.
When you can eat, when you will be walking, whether a drain is planned, and what has to be true before discharge. Specific answers to those questions are a good indicator of how well the operation has been planned.