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dr q m leong


As a well trained and experienced surgeon and endoscopist, Dr Leong performs a wide variety of procedures.

General surgery focuses on the management as well as surgical treatment of conditions affecting almost any area of the body. Here at Nobel Surgery, our Singapore clinic conducts colonoscopies as well as a range of acute surgical procedures to help provide relief for our patients. 

Dr QM Leong, Medical Director and Surgeon, brings his considerable experience, knowledge, as well as skills to Nobel Surgery. He is well-versed in the issues related to the colon as well as digestive tract, allowing our colorectal clinic to offer a variety of medical treatments, be it laparoscopies, colonoscopies, haemorrhoidectomies, cholecystectomies, or other minimally invasive surgeries.

Nobel Surgery also provides colonoscopy services at our Singapore clinic to facilitate early detection and treatment against colorectal cancer. Your individual medical needs will be assessed by Dr QM Leong and our team of dedicated nursing staff, allowing us to effectively manage your condition. Read on for more information on the various procedures that we offer.

Gastroscopy (OGD) & Colonoscopy (Diagnostic and Therapeutic)

Gastroscopy is a procedure where your doctor examines the lining of your oesophagus, stomach, and duodenum. A soft and thin bendable tube with an attached video camera is gently inserted into the mouth and advanced in, allowing your doctor to clearly examine your upper gastrointestinal tract. This procedure is often performed as a day surgery procedure, and is quick and painless. A colonoscopy enables your doctor to examine the lining of your colon. A soft and flexible tube with a built-in camera is gently inserted into the anus and advanced in, allowing your doctor to see the linings of your colon as well as any present anomalies, such as removing polyps if necessary. We offer Same Day Colonoscopies for patients’ ease and to facilitate their comfort.

Laparoscopic Colorectal Surgery

Laparoscopic surgery, also known as keyhole surgery, is a procedure which is minimally invasive and avoids large incisions. Through a small incision near the naval, the surgeon places a hollow, needle-like tube known as a cannula. This tube will act as a passageway for carbon dioxide to enter the cavity. As the gas fills the abdominal cavity, a space is created in which the surgeon will place the laparoscope, a narrow tube with a video camera at the other end. Through this procedure, the surgeon is able to see a magnified view of your abdominal cavity on a screen. Other incisions will be made so as to provide openings for other specially designed surgical instruments for the surgery to take place. This procedure offers patients faster recovery, reduced postoperative pain and bleeding, as well as reduced scarring.

Open and Stapler Haemorrhoidectomy

Haemorrhoidal disease is a cause for concern to the affected patient as it causes pain as well as discomfort. The two most common treatment methods for haemorrhoids include open and stapler haemorrhoidectomy. Haemorrhoids that protrude with straining are known as third-degree haemorrhoids. Stapled haemorrhoidectomy is a surgical technique recommended for treating third-degree haemorrhoids, and is carried out under general anaesthesia. A part of the anorectum is stapled, reducing the likelihood of prolapse and reducing blood supply to the haemorrhoids, causing them to gradually shrink. In an open haemorrhoidectomy, hemorrhoidal tissue is excised in the same manner as in a closed procedure, the only difference is the incision is left open. Surgeons may choose to perform an open haemorrhoidectomy when the location of the affected area makes wound closure difficult, or the likelihood of postoperative infection is high. Often, a combination of open and closed technique is utilised.

Laparoscopic Cholecystectomy

Gallstones are hardened deposits that can form in the gallbladder. Most of the time, surgery is unnecessary for patients who present no symptoms. However, a surgery is recommended when patients start developing symptoms or complications such as gallbladder infection and bile duct obstruction. A laparoscopic cholecystectomy is the procedure of choice for removal of the gallbladder and treating gallstones. This procedure uses the laparoscopic technique to remove the diseased gallbladder from the patient’s body. It is performed under general anaesthesia, with small incisions being made in the abdominal area. The gallbladder will then be extracted from the body through one of the incisions. This procedure is generally safe, with low rates of complication, as well as encouraging faster recovery and reduced pain.

Laparoscopic Appendicectomy

The appendix is a narrow, finger-shaped organ found in the lower right side of the stomach area. Though it has no function at all in the human body, the appendix is connected to the large intestine. An appendectomy is an emergency surgery performed on patients suffering from appendicitis - a case in which the appendix becomes inflamed and swollen, requiring it to be removed. If left untreated, the appendix may burst and cause an abscess in the abdomen which may be life-threatening. A laparoscopic appendectomy is a minimally invasive surgery using small incisions instead of a single large one. A laparoscope is utilised to locate the appendix and facilitate removal. The surgery is performed under general anaesthesia and patients often experience a faster recovery and reduced pain.

Anal Fistula Surgery

Generally, anal fistulas do not heal on their own, requiring surgery by trained medical professionals to be removed. If left untreated, anal fistulas can develop into even more unpleasant symptoms and patients may experience repeated abscesses and other serious complications. The most common surgery utilised for treating anal fistulas is a fistulotomy. It is performed under general anaesthesia, and involves cutting along the whole length of the affected area. This allows the anal fistula to open up and gradually heal as a flat scar. A fistulotomy is considered one of the most effective treatment for anal fistulas, even though its effectiveness is only suitable for fistulas that do not pass through the sphincter muscles. Depending on the type and location of fistula, other surgery methods may be suggested by your doctor.

Lateral Sphincterotomy

An anal fissure is a tear in the lining of the anus. Left untreated, they may result in chronic anal pain and a cycle of constipation and further tearing. While medication and ointment may be sufficient, lateral internal sphincterotomy is utilised to treat severe or chronic anal fissures. The procedure involves making a small incision in the inner part of the anal sphincter. The aim of this surgery is to reduce the tension within the anal canal, promoting the healing of the anal fissure. The procedure will be conducted under anaesthesia and is generally short and straightforward. Most patients will be discharged on the day of the procedure, and with proper care, patients are most likely to recover fully within two to four weeks.

Open and Laparoscopic Hernia Surgery

A hernia refers to a protrusion of an internal organ through a weakness in the muscle or tissue, with most hernias occurring in the abdominal wall. While most hernias are usually not life-threatening nor cause any immediate distress, they can cause severe complications if left untreated. Unfortunately, there is no medication that can fix or repair hernias, and surgery is the only solution. Hernia surgery is a commonly performed and well-established operation. The usual methods of surgical treatments are open surgery or laparoscopic (keyhole) surgery. Open hernia surgery involves the surgeon making a small incision in the groin to repair the hernia. Laparoscopic hernia surgery refers to small incisions being made in the abdominal area. This procedure is known to be minimally invasive, with patients experiencing a shorter recovery time before going back to full activity.

Excision of Skin Lumps and Abscesses

Skin lumps and abscesses are small non-cancerous bumps found on most parts of the skin, and are usually referred to as sebaceous cysts. While generally harmless and having almost no symptoms, they may become infected or inflamed, causing the overlying skin to turn red, sore and tender. As sebaceous cysts do not usually disappear by themselves, it is best to get it removed before it grows larger or gets infected. In some cases, sebaceous cysts may become cancerous, and surgery is needed to remove the cyst. Surgical removal procedures for cysts can be carried out with local anaesthesia (for small ones) and general anaesthesia (for big ones). Generally, risks from cysts removal surgery are low, provided if the patient is not suffering from underlying chronic conditions.