Surgical Treatments

Transanal Minimally Invasive Surgery (TAMIS) in Los Angeles

State-of-the-Art Organ-Preserving Rectal Surgery With Precision, Comfort, and Faster Recovery

01 overview 02 Symptoms 03 surgery prep 04 FAQS

What Is Transanal Minimally Invasive Surgery (TAMIS)?

Transanal Minimally Invasive Surgery (TAMIS) is a specialized, minimally invasive technique that allows surgeons to remove early rectal cancers, large rectal polyps, and benign lesions through the anal canal, without abdominal incisions. Using a laparoscopic platform inserted transanally, TAMIS provides a magnified, high-definition view of the rectum and enables precise excision while preserving surrounding tissue.

Because TAMIS avoids major surgery, it offers less pain, lower complication rates, and a significantly faster return to normal activities. As one of the most experienced colorectal surgeons in Southern California, Dr. Karen Zaghiyan is recognized for delivering excellent outcomes with TAMIS, often helping patients avoid more invasive operations such as total mesorectal excision or colectomy.

Signs and Symptoms That May Lead to Requiring TAMIS

TAMIS is typically recommended when rectal lesions cannot be removed safely during colonoscopy or when early cancer is detected. Patients may need TAMIS for:

Large rectal polyps not suitable for endoscopic removal
Early-stage rectal cancer
Benign rectal tumors
Rectal lesions causing bleeding, mucus, or discomfort
Polyps located in challenging or deeper areas of the rectum
Removal of recurrent rectal polyps after prior attempts

What to Expect During TAMIS

Dr. Zaghiyan provides thorough, patient-centered care to make each step of TAMIS as smooth, comfortable, and predictable as possible.

Before surgery

You’ll undergo imaging, colonoscopy, and a detailed assessment to determine whether TAMIS is the safest and most effective option. You’ll receive preparation instructions, which may include a light bowel cleanse, medication adjustments, and anesthesia planning.

During surgery

TAMIS is performed under anesthesia using a specialized transanal port that allows for high-definition visualization and laparoscopic precision. Dr. Zaghiyan, known as the best TAMIS surgeon in Los Angeles, carefully removes the lesion while preserving rectal integrity. No external incisions are needed, reducing trauma and improving recovery.

After surgery

Most patients return home the same day. Mild rectal soreness or spotting is common but temporary. You will receive clear instructions on diet, bowel habits, activity levels, and follow-up care. Pathology results are typically reviewed shortly after surgery to determine if additional treatment is needed.

FAQs About Transanal Minimally Invasive Surgery (TAMIS)

Where to Find the Best TAMIS Surgeon in Los Angeles

Choosing the right surgeon is crucial when treating rectal polyps or early rectal cancer. Dr. Karen Zaghiyan is known for her expertise in advanced, minimally invasive rectal surgery, including TAMIS, and for prioritizing organ preservation, safety, and patient comfort.

Patients trust her not only for her technical excellence but also for her ability to simplify complex treatment decisions, offer compassionate guidance, and deliver exceptional outcomes with the least invasive approach possible. Whether you’ve been referred after polyp removal failed or are exploring options for early rectal cancer, you will receive a clear, personalized plan tailored to your needs.

Ready to experience expert care from the most trusted, best minimally invasive colorectal surgeons in Los Angeles?

Schedule Appointment

Call (310) 289-9224

LA’s Expert Colorectal Specialist

Karen Zaghiyan, MD

Request an appointment

For patients who need an urgent consultation, it is best to call us at (310) 289-9224. Otherwise, please complete and submit the form below and a member of our staff will contact you shortly.

ADDRESS

Karen Zaghiyan, MD 
8737 Beverly Blvd, Suite 101 
Los Angeles, CA 90048

phone

(310) 289-9224

Location

& Hours

hours

MON 9:00 a.m. - 5:00 p.m.

TUE 9:00 a.m. - 5:00 p.m.

WED 9:00 a.m. - 5:00 p.m.

THUR 9:00 a.m. - 5:00 p.m.

FRI 9:00 a.m. - 5:00 p.m.