GIST Specialist for Tarzana, CA
A gastrointestinal stromal tumor removed is not always a gastrointestinal stromal tumor finished. Recurrence is silent, usually appears within five years, and is highly treatable when found early. Joshua Ellenhorn, MD, FACS handles both the original operation and what follows it.
- Surveillance planning for patients operated on elsewhere
- Clinical Professor of Surgery, Cedars-Sinai Medical Center
- Resection and ablation of recurrent liver disease
- Risk grading from your original pathology report
What Happens After the Operation Matters as Much as the Operation
A great deal of attention goes into the resection and comparatively little into the decade after it. That is the wrong balance, because whether a recurrence is caught at one centimetre or at eight has more effect on your outcome than most surgical decisions do.
Recurrent GIST does not announce itself. It seeds the liver or the peritoneal surfaces and grows quietly, producing nothing you would notice until it is substantial. There is no blood test to catch it. Imaging at defined intervals is the only mechanism, and the interval should be derived from your risk category rather than from habit.
Patients arrive here regularly having been discharged from follow up with no schedule at all, or with vague instructions to come back if something feels wrong. Sometimes that is appropriate, if the original tumor was genuinely very low risk. Often it is not, and nobody has ever calculated the risk category to find out.
The two documents that settle it are the operative report and the original pathology. If you have them, the rest is straightforward.
How Recurrence Risk Is Actually Calculated
Three variables from your pathology report determine everything downstream: where the tumor was, how large it was, and the mitotic index. The figures below are approximate risks of progression after complete resection, drawn from the widely used AFIP criteria.
| Site and size | Low mitotic count | High mitotic count |
|---|---|---|
| Stomach, up to 2 cm | Essentially no risk | Low |
| Stomach, 2 to 5 cm | Very low, around 2% | Moderate, around 16% |
| Stomach, 5 to 10 cm | Low, around 4% | High, around 55% |
| Stomach, over 10 cm | Moderate, around 12% | High, around 85% |
| Small intestine, 2 to 5 cm | Low, around 4% | High, around 70% |
| Small intestine, 5 to 10 cm | Moderate, around 24% | High, around 85% |
| Small intestine, over 10 cm | High, around 50% | High, around 90% |
Low mitotic count means five or fewer per 50 high power fields, equivalent to 5 square millimetres on newer reports. These are population figures, not predictions about you, and tumor rupture at any size raises risk substantially. Use them to understand the reasoning, then get your own grading confirmed.
What a Proper Follow Up Schedule Looks Like
Contrast CT of the abdomen and pelvis is the workhorse. For intermediate and high risk tumors, that generally means every three to six months for the first few years, moving to annually, and continuing to somewhere between five and ten years. Low risk tumors need far less, and the very lowest may reasonably need none.
Two practical points get missed. The first is that scans should be compared against prior studies rather than read in isolation, because a stable liver lesion present for six years is a very different thing from a new one. Keeping your old imaging accessible is genuinely worth the administrative effort.
The second is that surveillance should have a stated endpoint. Open ended scanning is not more careful, it is just less considered, and it carries its own costs in radiation, expense, and the anxiety of an indefinite process. A schedule that tapers and finishes is what a properly graded plan produces.
If a suspicious lesion does appear, the response is measured rather than immediate. Targeted therapy usually leads, and surgery or ablation follows once the disease is controlled.
Eight Questions Worth Asking Any GIST Surgeon
These are the questions that actually determine your treatment. If any of them cannot be answered clearly, that is useful information in itself.
- What is the mitotic index on my pathology report?
- Which risk category does that put me in?
- Was mutation testing done, and what did it show?
- Can this be removed with the capsule intact?
- Is a minimally invasive approach realistic for my tumor?
- Would medication before surgery make the operation smaller?
- Do I need imatinib afterwards, and for how long?
- What is my surveillance schedule, and when does it stop?
The Operations, on Record
Recordings of real GIST resections narrated by the surgeon who performed them. Relevant whether you are facing a first operation or a second.
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 that shortens both operating and recovery time.
Robotic Resection of a Duodenal GIST
Duodenal GIST removed robotically, with the pancreas and bile duct preserved.
Recurrence Is Not a Dead End
Liver deposits and peritoneal recurrence are frequently resectable once targeted therapy has established control. Patients live for many years with recurrent GIST that is actively managed rather than merely observed.
Certifications and Appointments
Two American Board of Surgery certifications, a Cedars-Sinai teaching appointment, and membership of the societies that publish the surveillance guidelines referenced above.
- 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.
Long term GIST care is a particular feature of his practice. Because the disease is rare, patients frequently lose continuity: the surgeon who operated moves on, the oncologist rotates, and the surveillance schedule quietly lapses. A practice built around one tumor type does not have that problem, and a meaningful share of the patients seen here were operated on elsewhere years ago and are looking for someone to take the follow up seriously.
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
Reconstructing a Follow Up Plan
Find Two Documents
The operative report and the original pathology. Call (310) 356-3792 or book online and send them ahead with any imaging since. If you cannot locate them, the office can help request them from the treating hospital.
Establish the Risk Category
Site, size, and mitotic index give the category, and the category gives the schedule. You should leave knowing which band you are in and what the figures behind it mean.
Set the Schedule and the Endpoint
A written interval plan with a defined finish, coordinated with your physician in Tarzana or the wider Valley so the scans actually get ordered.
Over the Hill From the West Valley
Ventura Boulevard east to Coldwater Canyon, over the hill to Beverly Drive, then east to 3rd Street is the usual route from Tarzana. The 101 east to Laurel Canyon and south is the alternative. Either canyon slows considerably at peak, so allow closer to thirty five minutes in the morning and late afternoon.
Cedars-Sinai has a presence in the west Valley through Providence Cedars-Sinai Tarzana Medical Center, and imaging performed locally is generally straightforward to obtain and review here. For surveillance in particular, that matters: scans can often be done closer to home and read against your prior studies without a trip over the hill for every interval.
The office itself sits in the medical plaza attached to Cedars-Sinai Medical Center, so consultations, pathology review, and surgery are in one building.
8635 W 3rd St, Suite 880W
Los Angeles, CA 90048
Monday to Saturday, 11:00am to 8:00pm
Closed Sunday
Frequently Asked Questions
My GIST was removed years ago. Why am I still being scanned?
Where does GIST come back?
How long should surveillance continue?
I finished three years of imatinib. Am I cured?
If it comes back, is that the end of the options?
My scan shows something in the liver. Is that automatically recurrence?
Can I be followed here if another surgeon did the original operation?
How far is your office from Tarzana?
Do You Know When Your Scans Stop?
If your GIST was removed and nobody has given you a written surveillance schedule with an endpoint, your risk category has probably never been calculated. It takes one appointment and two documents to fix that.
