Transanal Minimally Invasive Surgery in Los Angeles
Advanced transanal minimally invasive surgery (TAMIS) with Dr. Moshe Barnajian — removing early rectal tumors and large polyps with no abdominal incision.
Scarless Removal of Early Rectal Lesions
Transanal minimally invasive surgery, often called TAMIS, is an advanced technique for removing early rectal tumors and large polyps through the natural opening of the anus, with no abdominal incision at all. For the right lesion, it completely changes what treatment looks like.
Instead of a major operation to remove part of the rectum, transanal minimally invasive surgery uses a small access port, high-definition optics, and precise instruments to remove the lesion while preserving the rectum. Recovery is measured in days, not weeks.
Trained at Cedars-Sinai, Dr. Barnajian performs this specialized technique for patients across Los Angeles.
Why This Technique Is Different
For suitable lesions, this approach offers cure rates comparable to major surgery while preserving the rectum and quality of life.
No External Incisions
The entire procedure is performed through the anus, so there are no abdominal cuts and no visible scars.
Rectum Preservation
The lesion is removed while the rectum is preserved, avoiding a permanent colostomy in suitable cases.
Rapid Recovery
Most patients go home the same day or after one night and return to normal activity within days.
Who Is a Candidate
Transanal minimally invasive surgery is ideally suited for early rectal tumors and large polyps that cannot be removed during a colonoscopy. Candidacy depends on the size, location, and depth of the lesion, which is why thorough staging comes first.
When a lesion qualifies, this technique offers cure rates comparable to major resection while avoiding the pain, scarring, and longer recovery of open surgery. Because it is demanding and available at only a limited number of centers, results depend heavily on the surgeon’s experience.
What the Procedure Involves
Dr. Barnajian performs this procedure with meticulous precision and will tell you candidly whether it is right for your lesion.
Thorough Staging
Imaging and expert pathology review confirm the lesion is suitable before treatment.
Precise Removal
A small port and high-definition optics allow the lesion to be removed accurately through the anus.
Rectum Preservation
Normal rectal function is preserved, protecting continence and quality of life.
Same-Day Recovery
Most patients go home quickly with minimal pain and a fast return to activity.
Coordinated Follow-Up
Careful surveillance ensures any further care is timely and effective.
What Your Visit Looks Like
Dr. Barnajian reviews your imaging and pathology, confirms whether the technique is right for your lesion, and explains the procedure and recovery clearly.
Before your appointment
Bring your colonoscopy report, imaging, and pathology so we can confirm candidacy and plan precisely.
During your visit
The procedure is performed through the anus with no abdominal incision, usually as a same-day or overnight stay.
After your care
You recover quickly with minimal pain and follow a clear surveillance plan to protect your long-term health.
Same-week appointments available
Why Patients Choose Dr. Barnajian
Dr. Moshe Barnajian is a board-certified colorectal surgeon (FASCRS), Cedars-Sinai trained, who performs transanal minimally invasive surgery, an option available at only a limited number of centers.
His practice offers rapid access, coordinated oncology care when needed, and most PPO insurance accepted with benefits verified in advance. Call (424) 622-9028 to schedule.
TAMIS Across Los Angeles
Dr. Barnajian performs transanal minimally invasive surgery for patients from Beverly Hills, Santa Monica, Pasadena, and throughout Los Angeles, with rapid access and coordinated care.
For trusted information on transanal minimally invasive surgery and colorectal health, visit the American Society of Colon & Rectal Surgeons, or explore all of Dr. Barnajian's colorectal services.
TAMIS FAQs
What can this procedure treat?
It is ideal for early rectal tumors and large polyps that cannot be removed during colonoscopy. Candidacy depends on the size, location, and depth of the lesion, which thorough staging confirms.
Will I have a colostomy afterward?
No. A major advantage of this technique is that it removes the lesion while preserving the rectum, avoiding a permanent colostomy in suitable patients.
When should I see a specialist about transanal minimally invasive surgery?
You should be evaluated if you have a new diagnosis, persistent symptoms, or a significant family history. Early, expert evaluation of transanal minimally invasive surgery leads to more options and better outcomes. Call (424) 622-9028 to be seen this week.
How is transanal minimally invasive surgery managed?
Care is individualized and coordinated with your other physicians when needed. Dr. Barnajian explains every option and recommends the safest, most effective plan.
Do you accept insurance?
Yes. Most PPO plans are accepted and our team verifies your benefits before your visit. Call (424) 622-9028 to confirm coverage.
Explore TAMIS in Los Angeles
Advanced, rectum-preserving surgery from an experienced colorectal surgeon. Prompt consultations available.