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James Tan - Bariatric, Laparoscopic and General Surgeon

Private Service, General Surgery, Bariatric (Weight Loss) Surgery

Description

James Tan is a Bariatric, Laparoscopic and General Surgeon in Hawke's Bay.

James specialises in:

  • Bariatric surgery, including laparoscopic sleeve gastrectomy and laparoscopic Roux-en-Y gastric bypass
  • Anti-reflux and hiatal hernia surgery
  • Laparoscopic and open hernia repair
  • Laparoscopic cholecystectomy and cholangiography
  • Endoscopy (gastroscopy and colonoscopy)
  • Skin lesion removal, pilonidal surgery and other general surgery procedures


What is General Surgery?

The role of the general surgeon varies, but in broad terms general surgery can be said to deal with a wide range of conditions within the abdomen, breast, neck, skin and, sometimes, vascular (blood vessel) system.
While the name would suggest that the focus of general surgery is to perform operations, often this is not the case. Many patients are referred to surgeons with conditions that do not need surgical procedures, but merely require counselling or medical treatment.

What is Laparoscopic Surgery?
Laparoscopic (or keyhole) surgical procedures are performed through several small cuts (incisions) usually only 5-10mm long, rather than through one large incision.
A long, narrow surgical telescope (laparoscope) that has a tiny camera and light source attached, is inserted through one of the incisions so that the surgeon can view the inside of the body on a TV monitor.
The surgeon then passes specially designed surgical instruments through the other incisions and carries out the procedure using the TV monitor to guide the instruments.
Laparoscopic surgery is usually associated with less blood loss during surgery and less pain and scarring following surgery. In most cases, time spent in hospital is less and overall recovery time from the operation is less than with conventional open surgery.

Consultants

Ages

Youth / Rangatahi, Adult / Pakeke, Older adult / Kaumātua

How do I access this service?

Referral, Contact us, Make an appointment

Referral Expectations

When you come to your appointment, your surgeon will ask questions about your illness and examine you to try to determine or confirm the diagnosis. This process may also require a number of tests (e.g. blood tests, x-rays, scans etc). Sometimes this can all be done during one visit, but for some conditions this will take several follow-up appointments. Occasionally some tests are arranged even before your appointment to try to speed up the process.
Once a diagnosis has been made, your surgeon will discuss treatment with you. In some instances this will mean surgery, while other cases can be managed with medication and advice. If surgery is advised, the steps involved in the surgical process and the likely outcome are usually discussed with you at this time.

Fees and Charges Categorisation

Fees apply

Procedures / Treatments

Bariatric Surgery

Bariatric or weight loss surgery refers to a number of different procedures that can be performed to treat obesity. Procedures fall into three main types: Malabsorptive - these procedures involve bypassing a section of the small intestine thus reducing the amount of food absorbed into the body. Restrictive - these procedures involve reducing the size of the stomach, usually by creating a small pouch at the top of the stomach which limits the amount of food that can be eaten. Malabsorptive/Restrictive Combination - these procedures combine both techniques e.g. gastric bypass surgery in which a small stomach pouch is formed and its outlet connected to part of the small intestine. Laparoscopic Gastric Banding is a surgical treatment for obesity that involves placing an inflatable cuff around the upper stomach. The cuff can be further inflated or deflated to adjust the volume of food that can be consumed. Laparoscopic Gastric Bypass involves bypassing a section of the intestine so that less food is absorbed.

Bariatric or weight loss surgery refers to a number of different procedures that can be performed to treat obesity. Procedures fall into three main types:

Malabsorptive - these procedures involve bypassing a section of the small intestine thus reducing the amount of food absorbed into the body.

Restrictive - these procedures involve reducing the size of the stomach, usually by creating a small pouch at the top of the stomach which limits the amount of food that can be eaten.

Malabsorptive/Restrictive Combination - these procedures combine both techniques e.g. gastric bypass surgery in which a small stomach pouch is formed and its outlet connected to part of the small intestine.

Laparoscopic Gastric Banding is a surgical treatment for obesity that involves placing an inflatable cuff around the upper stomach. The cuff can be further inflated or deflated to adjust the volume of food that can be consumed.
Laparoscopic Gastric Bypass involves bypassing a section of the intestine so that less food is absorbed.
Gastro-oesophageal Reflux Disease (GORD)

GORD is caused by the backflow (reflux) of food and stomach acid into the oesophagus (the tube that connects the mouth to the stomach) from the stomach. This happens when the valve between the stomach and the lower end of the oesophagus is not working properly. The main symptom of GORD is heartburn (a burning feeling in the stomach and chest). Laparoscopic Nissen Fundiplication is a surgical procedure for GORD that involves wrapping the top part of the stomach (fundus) around the lower end of the oesophagus. The valve between the stomach and the oesophagus is also replaced or repaired.

GORD is caused by the backflow (reflux) of food and stomach acid into the oesophagus (the tube that connects the mouth to the stomach) from the stomach. This happens when the valve between the stomach and the lower end of the oesophagus is not working properly. The main symptom of GORD is heartburn (a burning feeling in the stomach and chest).
Laparoscopic Nissen Fundiplication is a surgical procedure for GORD that involves wrapping the top part of the stomach (fundus) around the lower end of the oesophagus. The valve between the stomach and the oesophagus is also replaced or repaired.
Hernias

A hernia exists where part of the abdominal wall is weakened and the contents of the abdomen push through to the outside. An inguinal hernia forms when part of the intestine pushes through the abdominal wall, causing a bulge in the groin. A hiatus hernia is caused by part of the stomach and lower oesophagus bulging through the diaphragm (a sheet of muscle between the chest and the stomach) into the chest. A hiatus hernia can cause a burning feeling in the upper abdomen and chest (heartburn). Laparoscopic Hernia Repair involves using surgical instruments to push the hernia back into its original position and repairing the weakness in the abdominal wall (or diaphragm in the case of a hiatus hernia).

A hernia exists where part of the abdominal wall is weakened and the contents of the abdomen push through to the outside.
An inguinal hernia forms when part of the intestine pushes through the abdominal wall, causing a bulge in the groin.
A hiatus hernia is caused by part of the stomach and lower oesophagus bulging through the diaphragm (a sheet of muscle between the chest and the stomach) into the chest. A hiatus hernia can cause a burning feeling in the upper abdomen and chest (heartburn).
Laparoscopic Hernia Repair involves using surgical instruments to push the hernia back into its original position and repairing the weakness in the abdominal wall (or diaphragm in the case of a hiatus hernia).
Gallstones

Sometimes, some of the watery fluid (bile) stored in the gallbladder hardens into pieces of stone-like material known as gallstones. Gallstones may vary from the size of a grain of sand to a golf ball and there may be one or hundreds of stones. Gallstones can cause abdominal pain, fever and vomiting if they block the movement of bile into or out of the gallbladder. Laparoscopic Cholecystectomy is the surgical removal of the gallbladder. A laparoscope is inserted into the abdominal cavity at the level of the tummy button. Surgical instruments are inserted through other incisions and the gallbladder removed.

Sometimes, some of the watery fluid (bile) stored in the gallbladder hardens into pieces of stone-like material known as gallstones. Gallstones may vary from the size of a grain of sand to a golf ball and there may be one or hundreds of stones.
Gallstones can cause abdominal pain, fever and vomiting if they block the movement of bile into or out of the gallbladder.
Laparoscopic Cholecystectomy is the surgical removal of the gallbladder. A laparoscope is inserted into the abdominal cavity at the level of the tummy button. Surgical instruments are inserted through other incisions and the gallbladder removed.

Gastroscopy

This is a procedure which allows the doctor to see inside your oesophagus, stomach, and the first part of the small intestine (duodenum) and examine the lining directly. What to expect The gastroscope is a plastic-coated tube about as thick as a ballpoint pen and is flexible. It has a tiny camera attached that sends images to a viewing screen. During the test you will swallow the tube but the back of your throat is sprayed with anaesthetic so you don’t feel this. You will be offered a sedative (medicine that will make you sleepy but is not a general anaesthetic) as well. If the doctor sees any abnormalities they can take a biopsy (a small piece of tissue) to send to the laboratory for testing. This is not a painful procedure and will be performed at the day stay unit in a theatre suite (operating room) by a specialist doctor with nurses assisting. Complications from this procedure are very rare but can occur. They include: bleeding after a biopsy, if performed an allergic reaction to the sedative or throat spray perforation (tearing) of the stomach with the instrument (this is a serious but extremely rare complication). Before the procedure You will be asked not to eat anything from midnight the night before and not to take any of your medications on the day of the procedure. After the procedure You will stay in the day stay unit until the sedation has worn off which usually takes 1-2 hours. You will be given something to eat or drink before you go home. If you have been sedated, you are not to drive until the following day. If biopsies are taken these will be sent for analysis and results are available within 2-3 weeks. A report and copies of these are sent to your GP.

This is a procedure which allows the doctor to see inside your oesophagus, stomach, and the first part of the small intestine (duodenum) and examine the lining directly. 

What to expect
The gastroscope is a plastic-coated tube about as thick as a ballpoint pen and is flexible.  It has a tiny camera attached that sends images to a viewing screen.  During the test you will swallow the tube but the back of your throat is sprayed with anaesthetic so you don’t feel this.  You will be offered a sedative (medicine that will make you sleepy but is not a general anaesthetic) as well.  If the doctor sees any abnormalities they can take a biopsy (a small piece of tissue) to send to the laboratory for testing.
This is not a painful procedure and will be performed at the day stay unit in a theatre suite (operating room) by a specialist doctor with nurses assisting.
Complications from this procedure are very rare but can occur. They include:

  • bleeding after a biopsy, if performed
  • an allergic reaction to the sedative or throat spray
  • perforation (tearing) of the stomach with the instrument (this is a serious but extremely rare complication).

Before the procedure
You will be asked not to eat anything from midnight the night before and not to take any of your medications on the day of the procedure.

After the procedure
You will stay in the day stay unit until the sedation has worn off which usually takes 1-2 hours.  You will be given something to eat or drink before you go home.  If you have been sedated, you are not to drive until the following day.

If biopsies are taken these will be sent for analysis and results are available within 2-3 weeks.  A report and copies of these are sent to your GP.

Colonoscopy

This is a procedure which allows the doctor to see inside your large bowel and examine the surfaces directly and take biopsies (samples of tissue) if needed. Treatment of conditions can also be undertaken. What to expect The colonoscope is a flexible plastic-coated tube a little thicker than a ballpoint pen which has a tiny camera attached that sends images to a viewing screen. You will be given a sedative (medicine that will make you sleepy but is not a general anaesthetic). The tube is passed into the rectum (bottom) and gently moved along the large bowel. The procedure takes from 10 minutes to 1 hour and your oxygen levels and heart rhythm are monitored throughout. The procedure is performed in a day stay operating theatre. Risks of a colonoscopy are rare but include: bleeding if a biopsy is performed allergic reaction to the sedative perforation (tearing) of the bowel wall. Before the procedure You will need to follow a special diet and take some laxatives (medicine to make you go to the toilet) over the days leading up to the test. After the procedure You will stay in the day stay unit until the sedation has worn off which usually takes 1-2 hours. You will be given something to eat or drink before you go home. If you have been sedated, you are not to drive until the following day. If biopsies are taken these will be sent for analysis and results are available within 2-3 weeks. A report and copies of these are sent to your GP.

This is a procedure which allows the doctor to see inside your large bowel and examine the surfaces directly and take biopsies (samples of tissue) if needed.  Treatment of conditions can also be undertaken.

What to expect
The colonoscope is a flexible plastic-coated tube a little thicker than a ballpoint pen which has a tiny camera attached that sends images to a viewing screen. You will be given a sedative (medicine that will make you sleepy but is not a general anaesthetic). The tube is passed into the rectum (bottom) and gently moved along the large bowel.  The procedure takes from 10 minutes to 1 hour and your oxygen levels and heart rhythm are monitored throughout.
The procedure is performed in a day stay operating theatre. 

Risks of a colonoscopy are rare but include:      

  • bleeding if a biopsy is performed         
  • allergic reaction to the sedative
  • perforation (tearing) of the bowel wall.
Before the procedure
You will need to follow a special diet and take some laxatives (medicine to make you go to the toilet) over the days leading up to the test.

After the procedure
You will stay in the day stay unit until the sedation has worn off which usually takes 1-2 hours.  You will be given something to eat or drink before you go home.  If you have been sedated, you are not to drive until the following day. 

If biopsies are taken these will be sent for analysis and results are available within 2-3 weeks.  A report and copies of these are sent to your GP.

Skin Disorders

Skin conditions dealt with by general surgery include lumps, tumours and other lesions of the skin and underlying tissues. These are often fairly simple conditions that can be dealt with by performing minor operations under local anaesthetic (the area of skin being treated is numbed). Often these procedures are performed as outpatient or day case procedures.

Skin conditions dealt with by general surgery include lumps, tumours and other lesions of the skin and underlying tissues. These are often fairly simple conditions that can be dealt with by performing minor operations under local anaesthetic (the area of skin being treated is numbed). Often these procedures are performed as outpatient or day case procedures.

Gastrointestinal Disorders

Conditions of the gut dealt with by general surgery include disorders of the oesophagus, stomach, small bowel, large bowel and anus. These range from complex conditions such as ulceration or cancer in the bowel through to fairly minor conditions such as haemorrhoids. Many of the more major conditions such as bowel cancer will require surgery, or sometimes treatment with medication, chemotherapy or radiotherapy. Haemorrhoids are a condition where the veins under the lining of the anus are congested and enlarged. Less severe haemorrhoids can be managed with simple treatments such as injection or banding which can be performed in the clinic while larger ones will require surgery.

Conditions of the gut dealt with by general surgery include disorders of the oesophagus, stomach, small bowel, large bowel and anus. These range from complex conditions such as ulceration or cancer in the bowel through to fairly minor conditions such as haemorrhoids. Many of the more major conditions such as bowel cancer will require surgery, or sometimes treatment with medication, chemotherapy or radiotherapy.

Haemorrhoids are a condition where the veins under the lining of the anus are congested and enlarged. Less severe haemorrhoids can be managed with simple treatments such as injection or banding which can be performed in the clinic while larger ones will require surgery.
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Contact Details

Hawke's Bay Specialist Surgery, 10 Murray Place
Camberley
Hastings
Hawke's Bay 4120

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Street Address

Hawke's Bay Specialist Surgery, 10 Murray Place
Camberley
Hastings
Hawke's Bay 4120

This page was last updated at 10:16AM on December 18, 2023. This information is reviewed and edited by James Tan - Bariatric, Laparoscopic and General Surgeon.