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Appendicitis

What is the Appendix?

The appendix is a tubular structure at the lower end of the caecum, situated at the beginning of the colon, just below where the small intestines enter the colon. In most people, it lies in the lower right side of the abdomen.

Appendicitis occurs when there is infection or inflammation of the appendix. This is believed to be due to blockage of lumen of the appendix, usually by a lump of hard stools (called faecolith). The mucus produced by the lining of the appendix then becomes trapped and the appendix then becomes swollen. The pressure affects the blood flowing in the wall of the appendix, and eventually causes it to break and the appendix to burst open, releasing all the infected material.

If there is still no treatment, the infection usually accumulates around the area and causes a large abscess. In some cases, the body is unable to contain the abscess and the pus spreads throughout the entire abdominal cavity, causing severe infection and possibly even death.

Appendicitis
Many people underestimate how serious appendicitis can be. Please seek immediate medical attention should you experience symptoms.

Symptoms

Although most people think of pain from appendicitis in the lower right side of the abdomen, the pain from appendicitis usually starts around the umbilicus or even above it. The pain then moves to the lower right abdomen. There may also be other symptoms such as nausea, vomiting and fever. There is usually pain when pressing on the abdomen over the area of the appendix, and the muscles will be felt to be tense. Sudden release of the pressure of pressing can also cause pain.

Tests for appendicitis

Physical examination by palpating and having pain in the abdomen only confirms the presence of inflammation and/or infection in the lining of the abdominal cavity below the area being pressed. It does not indicate the source of the inflammation or infection.

The most accurate test is a CT scan. Other tests such as blood tests have been reported to have accuracy as low as 50%.

Treatment

Almost all cases of appendicitis require the appendix surgery to be removed. There are a few ways to do this:

  • Open surgery – This is the traditional way in which a cut is made across the lower right side of the abdomen and the appendix is removed through the cut. The cut is usually at least 4-5 cm long and can be even longer if there is severe infection around the appendix.
  • Laparoscopic (Keyhole) Surgery– This is quite common nowadays. A cut is made at the umbilicus and a camera is inserted. Two small 5mm cuts are made further below to put in the instruments to free up the appendix and cut it off. The appendix is then removed through the cut at the umbilicus.
  • Single Port Surgery – This is a variation of laparoscopic surgery in which a special device is inserted at the umbilicus. All the instruments are placed through the device, thus avoiding the other 2 small 5mm cuts. The surgery is performed in exactly the same way as the standard laparoscopic surgery.
The primary treatment for appendicitis is the removal of the appendix – especially before it bursts. Rest assured that we are able to live well without an appendix.

Most patients are discharged within 1-2 days after surgery. However, those with severe infection or abscess from an appendix that has perforated may need to stay longer until the infection is resolved. Hence, it is important to seek treatment early when symptoms of pain arise.

After Surgery

Most patients can start on drinking liquids after the surgery. They can start on diet the next day and be discharged thereafter.


Our Colorectal Surgeon
Ho Kok Sun Colorectal clinic logo
Dr Ho Kok Sun
Colorectal & General Surgeon
MBBS (Singapore),
M Med (Gen Surg) (Singapore),
FRCSEd (Gen Surg), FAMS
Dr Ho Kok Sun has been treating appendicitis for over a decade and was the past President of the ASEAN Society of Colorectal Surgeons and the Society of Colorectal Surgeons (Singapore), as well as a founding member of the Eurasian Colorectal Technologies Association. Dr Ho was actively involved in the training of medical students and residents, and has published widely in reputable journals and book chapters. He believes that treatment should always be personalised to the patient’s needs.

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Ho Kok Sun Colorectal clinic logo
Ho Kok Sun Colorectal

Colorectal Surgeon

3 Mount Elizabeth,
Mount Elizabeth Medical Centre
#04-08, Singapore 228510

Tel (+65) 6737 2778
Fax : (+65) 6737 2389
Email hokoksuncolorectal@gmail.com

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