Get the Right Care

Weight Loss Surgery, General Surgical Procedures, Endoscopies

Electing to have surgery is never an easy decision to make. Once you’ve found the resolve to undergo surgery, choosing where to have it performed is a relatively easy one, especially when you have a team led by Dr. Michel Gagner, one of the world’s most preeminent experts in minimally invasive and weight-loss surgery, available to guide you through this life-changing process.

Laparoscopic Sleeve Gastrectomy

A laparoscopic sleeve gastrectomy is a less invasive surgery that reduces stomach volume with the remaining section left in the shape of a sleeve.

Roux-en-Y Gastric Bypass Surgery

A laparoscopic Roux-en-Y gastric bypass consists of creating a small pouch from the stomach (constraining food intake), which is connected directly to the small intestine.

Mini Gastric Bypass

A mini gastric bypass (MGB) provides the dual action of gastric reduction and intestinal malabsorption. The mini version of the gastric bypass involves less intestinal rerouting and a shorter overall surgery time.

Endoscopic Sleeve Gastroplasty

Endoscopic Sleeve Gastroplasty reduces the size of the stomach so that the patient feels full faster while eating. The procedure is performed endoscopically, meaning a camera is inserted through the mouth and esophagus and into the stomach.

Single Anastomosis Duodenal Switch

A single anastomosis duodenal switch (SADS) reduces bowel movement frequency as well as produces fewer side effects and vitamin deficiencies.

Duodenal Switch

The end product of a duodenal switch is two intestinal limbs. It combines a sleeve gastrectomy with an intestinal bypass. It is most effective for Type 2 diabetes. However, nutrient absorption is limited within the lower intestines.

Revisions Surgeries

With all the years of experience Dr. Gagner has accumulated, it is no wonder he is one of the world’s renowned experts in highly complex bariatric surgery revision procedures. Dr. Gagner can accommodate most patient cases. Once he has a chance to learn the peculiarities of a case, he can advise on the best course of action.

Diagnostic Surgery

When imaging techniques fail, we turn to diagnostic surgery to target the source of pain.

Hernia Surgery - Montreal, QC

No matter the type of hernia, Dr. Gagner will repair it. This is an out-patient procedure that requires post-surgery convalescence.


Have gallstones? Dr. Gagner removes the gallbladder and with it, your excruciating pain. Leave the same day as your surgery.

Nissen Fundoplication

For a permanent solution to Gastroesophageal Reflux Disease (GERD), patients opt for the Nissen Fundoplication.

Pilonidal Cystectomy - Pilonidal Cyst Surgery

Pilonidal cysts are the name we give specific cysts that are usually located near the tailbone at the top of the cleft of the buttocks. These abnormal pockets usually occur when an ingrown hair punctures the skin and becomes embedded under the skin.

Benign Breast Mass Removal Surgery

During a clinical breast exam, your doctor will check both breasts for lumps, masses (fibroadenoma), and other problems. Sometimes the lumps will be too small to feel, so imaging (mammography, breast ultrasound) will be required to detect them. Once these masses are revealed, sampled, and analyzed, surgery may be required to remove them.

Hemorrhoidectomy - Hemorrhoid Surgery

Hemorrhoids are swollen veins in and around the most exterior part of your rectum and anus. With enough pressure and build-up of blood, these veins can protrude from the walls and lining of the rectum and anus.

Sphincterotomy - Anal Fissure Surgery

What is an anal fissure? In the most general terms, it is a tear in the thin tissue lining the anus. This tissue is called the mucosa. Most fissures occur when trying to pass large or hard stools during a bowel movement.

Sphincteroplasty - Fecal Incontinence Surgery

It is the impaired ability to control the release of gas or stool at a desired time. A typical sufferer will have lost control of their anal sphincter, the muscle that constricts or relaxes the opening of the anus.

Fistulotomy - Anal Fistula Surgery

What is an anal fistula? It is a small tunnel connecting an infected abscess inside the anus to the outside skin around the anus. The abscesses are usually formed from anal mucus glands lining the walls of the rectum. Sometimes the glands can get clogged and become infected, leading to an abscess. There is a strong likelihood these abscesses develop into anal fistulas.

Mohs Surgery - Cutaneous Cancer Removal

The goal of the surgery is to remove the Cutaneous cancers through Mohs surgery (otherwise known as Mohs micrographic surgery) little by little, removing as little tissue as possible, until no cancer remains. This procedure removes cancer and the surrounding damaged tissue while leaving as much healthy tissue as possible.

Nevi Excision - Giant Nevi (Mole) Removal Surgery

What is a mole? A mole Is a round- or oval-shaped cluster of pigmented skin cells – usually brown, black or skin tone – that can appear anywhere on your body.

Cystectomy - Cyst Removal Surgery

Cysts are sacs that form in the skin or anywhere in the body. They can be filled with fluid, air, or other material. There are many reasons why a cyst may form. However, the most common reasons include blockages in ducts, swollen hair follicles, and infection.

Lipoma Excision - Lipoma Removal Surgery

A lipoma is a lump of fatty tissue that develops and grows under the skin. Lipomas can develop anywhere on the body. However, most develop on the arms or legs, back, neck, shoulders, chest, or forehead.

Acrochordon Excision - Skin Tag Removal Surgery

A skin tag is a small flap of skin tissue that hangs off your skin by a thin stalk. Skin tags are usually found in folds of skins that are likely to rub together.

Wart Excision - Wart Removal Surgery

Warts are skin growths that are caused by the human papillomavirus (HPV). There are many different kinds of HPV, and only some of them cause actual growths on the skin. While these growths can occur anywhere on the body, most are found on fingers, hands, feet, the face, and in some cases, genitals.

Wound Debridement Surgery

Debridement is the removal of dead or infected skin tissue to help a wound heal. Debridement can also be performed to remove foreign material from the tissue.

Hidradenitis Suppurativa Surgery

It is a condition characterized by small, painful lumps that form under the skin. These lumps usually occur in areas where your skin rubs together, causing friction. Thus, HS can typically be found in the armpits, groin, buttocks and under the breasts.

Incision and Drainage / Clinical Lancing - Abscess Draining Surgery

Abscesses can develop anywhere on the body. We generally focus on abscesses that develop under the skin, in the anorectal area, and the breasts. We do perform abscess drainage surgeries in other areas, but further inquiries with our team of surgeons is necessary to proceed.


A colonoscopy is a sort of test that is used to see inside your large intestine and colon. This is done by inserting a tube containing a flexible camera (called a scope or colonoscope) up your rectum. The insides of your colon are then shown on a screen for the doctor to examine and analyze.

Endoscopy – Gastroscopy

A gastroscopy is a sort of test that is used to see inside your oesophagus, stomach, and first part of your small intestine. This is done by inserting a tube containing a flexible camera (called a scope or endoscope) down your mouth and into your stomach.

Abdominal pain

Abdominal pain in and around your abdominal area is a common enough complaint, but one that can be a symptom of a serious medical condition. While most abdominal pain is benign, in some rare instances, surgical intervention is required.

Constipation – Partial Colectomy or Intestinal Resection Surgery

Constipation occurs when bowel movements become less frequent or harder to pass. In some instances, passing stool may become extremely painful, making it difficult or scary to go to the bathroom. Psychological impediments to passing stool can develop, further exacerbating the problem.

Ventral (Incisional) Hernia Repair Surgery

An incisional hernia is best described as a hernia that develops around an incision site, usually along the intestines, but may also occur on organs and other tissues, after a previous surgery. There is a significant risk with abdominal surgeries that an incisional hernia develops post-surgery.

Inguinal Hernia Repair Surgery

An inguinal hernia is best described as a hernia that develops along your abdomen, usually with the intestines, but may also occur with organs and other tissues, due to weak muscles in the abdominal wall. In essence, your intestines and other tissues may ‘slip’ through your abdominal wall and create a bulge along your abdomen, trapping them between your muscles and skin.

Umbilical Hernia Repair Surgery

An umbilical hernia occurs when parts of your intestines or fatty tissue pushes through a weak spot in the abdominal wall - in this case, near the navel - and gets trapped between your skin and abdominal wall, creating a painful bulge. Some patients are predisposed to umbilical hernias, such as newborns and infants, but they can affect adults as well.

Cholecystectomy - Gallbladder removal surgery

The gallbladder is responsible for storing bile, the fat-digesting liquid produced by the liver. Over time, gallstones can form from the crystallization of bile components. Most people never have symptoms caused by the stones, until the onset of excruciating pain caused by a gallstone attack (biliary colic).

Tubal ligation - Female Sterilization Surgery

In the broadest of terms, it is a surgical procedure to prevent pregnancy. You may have heard it referred to as, “getting your tubes tied.” The end result is female sterilization, or the inability to conceive future children.

Vasectomy - Male Sterilization Surgery

In the broadest of terms, it is a surgical procedure to prevent the possibility of insemination. The end result is male sterilization, or the inability to conceive future children.

Did you know we have a support group?

Your questions and concerns have most likely been asked and answered in our support group. Moderated by our dietitians, nurses, and staff. We provide you with reliable patient education and resources to help you throughout this life-changing process.