Transanal Minimally Invasive Surgery in Los Angeles
Advanced transanal minimally invasive surgery (TAMIS) from Dr. Yosef Nasseri — 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.
Learn about rectal cancer, robotic surgery, or explore our full range of colorectal services.
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 the technique is demanding and available at only a limited number of centers, results depend heavily on the surgeon’s experience.
What the Procedure Involves
Dr. Nasseri performs this procedure with meticulous precision, and will tell you candidly whether it is the right option 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 to Expect
Dr. Nasseri 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 Choose Dr. Nasseri
Dr. Yosef Nasseri is a double board-certified colorectal surgeon who performs transanal minimally invasive surgery regularly for patients across Los Angeles and Southern California, an option available at only a limited number of centers.
Our practice offers rapid access, coordinated oncology care when needed, and most PPO insurance accepted with benefits verified in advance. Call (424) 655-3312 to schedule.
Colorectal Care Across Los Angeles
Dr. Yosef Nasseri welcomes patients from throughout the Los Angeles area, including Downtown LA, Hancock Park, Mid-Wilshire, Koreatown, and Larchmont. Our centrally located practice at Cedars-Sinai Medical Towers makes it easy to reach a leading colorectal specialist without a long wait, and same-week appointments are usually available for patients who need to be seen quickly.
Whether you are looking for a first opinion or a second, our Los Angeles team is here to help. We accept most PPO insurance plans and verify your benefits before your visit, so you can focus on getting the expert care you need. To schedule your consultation, call (424) 655-3312 or request an appointment online today.For trusted background on transanal minimally invasive surgery and colorectal health, see the American Society of Colon & Rectal Surgeons, then contact our office to discuss your transanal minimally invasive surgery care with Dr. Nasseri.
Transanal Minimally Invasive Surgery FAQs
What can transanal minimally invasive surgery 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 after this procedure?
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 consider transanal minimally invasive surgery?
The right timing depends on your diagnosis and goals. Dr. Nasseri reviews your situation and recommends transanal minimally invasive surgery only when it is the best option for you. Call (424) 655-3312 to be seen this week in Los Angeles.
Is transanal minimally invasive surgery minimally invasive?
Yes. Dr. Nasseri specializes in advanced, minimally invasive techniques that mean less pain, smaller incisions, and a faster recovery than traditional surgery.
Do you accept insurance?
Yes. Most PPO plans are accepted and our Los Angeles team verifies your benefits before your visit. Call (424) 655-3312 to confirm coverage and schedule.
Explore TAMIS in Los Angeles
Advanced, rectum-preserving surgery from an experienced colorectal surgeon. Prompt consultations available.