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Mr John Jarvis - General & Colorectal Surgeon
Private Service, General Surgery
Today
Westgate Medical Centre, 13E Maki Street, Westgate, Auckland
Description
John Jarvis is a New Zealand trained General and Colorectal Surgeon. His training in colorectal surgery took place at the Norfolk and Norwich University Hospital in England and the Flinders Medical Centre in Adelaide, Australia. John has held appointments in public with Waitemata DHB at North Shore and Waitakere hospitals for over 10 years.
His primary interest area is laparoscopic (keyhole) colorectal surgery for both benign and malignant conditions, an interest developed whilst being exposed to high volumes of such surgery in his UK appointment. In Norwich he also enhanced his skill in colonoscopy at a unit which was internationally known for its training techniques in this procedure.
John continues his practice in diverse areas of general surgery including surgery for gallstones, hernias, pilonidal sinus disease and simple & complex proctology. He also undertakes treatment of haemorrhoids at his private practice.
Private patients are seen at Waitemata Specialist Centre, Westgate and Silverdale, and colonoscopy and gastroscopy is performed by John at Waitemata Endoscopy.
What is Colorectal Surgery?
The colon and the rectum are part of the digestive tract that processes the food we eat. Together they make up the large intestine or large bowel and are located in the abdomen between the small intestine and the anus. The colon is about 1.8m long and absorbs water and nutrients from food. The rectum is the last segment of the large intestine and is about 20 -25cm long. This is where waste material is stored before it passes out of the body through the anus.
A colorectal surgeon is a general surgeon who has had further training and specialises in the diagnosis and treatment of diseases of the colon, rectum, and anus.
Consultants
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Mr John Jarvis
General Surgeon
Fees and Charges Description
Mr John Jarvis is a Southern Cross affiliated provider for a range of procedures including the following service catergories:
- Gastroenterology (digestive system)
- General surgery (breast, gallbladder, hernia)
- Skin cancer diagnosis & surgery
- Varicose veins.
Hours
Westgate Medical Centre, 13E Maki Street, Westgate, Auckland
Tue | 5:00 PM – 7:00 PM |
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Every second Tuesday
Common Conditions / Procedures / Treatments
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. Haemorrhoid Removal Haemorrhoidectomy: each haemorrhoid or pile is tied off and then cut away. Stapled Haemorrhoidectomy: a circular stapling device is used to pull the haemorrhoid tissue back into its normal position.
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. Haemorrhoid Removal Haemorrhoidectomy: each haemorrhoid or pile is tied off and then cut away. Stapled Haemorrhoidectomy: a circular stapling device is used to pull the haemorrhoid tissue back into its normal position.
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.
Haemorrhoid Removal
Haemorrhoidectomy: each haemorrhoid or pile is tied off and then cut away.
Stapled Haemorrhoidectomy: a circular stapling device is used to pull the haemorrhoid tissue back into its normal position.
Colonoscopy is the examination of your colon (large bowel) using a colonoscope (long, flexible tube with a camera on the end). The colonoscope is passed into your rectum (bottom) and then moved slowly along the entire colon, while images from the camera are displayed on a television monitor. The procedure takes from 10 minutes to an hour. Sometimes a small tissue sample (biopsy) will need to be taken during the procedure for later examination at a laboratory. A colonoscopy may help diagnose conditions such as polyps (small growths of tissue projecting into the bowel), tumours, ulcerative colitis (inflammation of the colon) and diverticulitis (inflammation of sacs that form on the walls of the colon). Colonoscopy may also be used to remove polyps in the colon. 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. What to expect It is important that the bowel is completely empty before the procedure takes place. This means that you will only be able to have liquids on the day before, and will probably have to take some oral laxative medication (to make you go to the toilet more). When you are ready for the procedure, you will be given medication (a sedative) to make you go into a light sleep. This will be given by an injection into a vein in your arm or hand. The colonoscopy will usually take 15 – 30 minutes, but you will probably sleep for another 30 minutes. Because you have been sedated (given medication to make you sleep) it is important that you arrange for someone else to drive you home. Some patients may experience discomfort after the procedure, due to air remaining in the colon.
Colonoscopy is the examination of your colon (large bowel) using a colonoscope (long, flexible tube with a camera on the end). The colonoscope is passed into your rectum (bottom) and then moved slowly along the entire colon, while images from the camera are displayed on a television monitor. The procedure takes from 10 minutes to an hour. Sometimes a small tissue sample (biopsy) will need to be taken during the procedure for later examination at a laboratory. A colonoscopy may help diagnose conditions such as polyps (small growths of tissue projecting into the bowel), tumours, ulcerative colitis (inflammation of the colon) and diverticulitis (inflammation of sacs that form on the walls of the colon). Colonoscopy may also be used to remove polyps in the colon. 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. What to expect It is important that the bowel is completely empty before the procedure takes place. This means that you will only be able to have liquids on the day before, and will probably have to take some oral laxative medication (to make you go to the toilet more). When you are ready for the procedure, you will be given medication (a sedative) to make you go into a light sleep. This will be given by an injection into a vein in your arm or hand. The colonoscopy will usually take 15 – 30 minutes, but you will probably sleep for another 30 minutes. Because you have been sedated (given medication to make you sleep) it is important that you arrange for someone else to drive you home. Some patients may experience discomfort after the procedure, due to air remaining in the colon.
Colonoscopy is the examination of your colon (large bowel) using a colonoscope (long, flexible tube with a camera on the end). The colonoscope is passed into your rectum (bottom) and then moved slowly along the entire colon, while images from the camera are displayed on a television monitor. The procedure takes from 10 minutes to an hour. Sometimes a small tissue sample (biopsy) will need to be taken during the procedure for later examination at a laboratory.
A colonoscopy may help diagnose conditions such as polyps (small growths of tissue projecting into the bowel), tumours, ulcerative colitis (inflammation of the colon) and diverticulitis (inflammation of sacs that form on the walls of the colon).
Colonoscopy may also be used to remove polyps in the colon.
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.
What to expect
It is important that the bowel is completely empty before the procedure takes place. This means that you will only be able to have liquids on the day before, and will probably have to take some oral laxative medication (to make you go to the toilet more).
When you are ready for the procedure, you will be given medication (a sedative) to make you go into a light sleep. This will be given by an injection into a vein in your arm or hand.
The colonoscopy will usually take 15 – 30 minutes, but you will probably sleep for another 30 minutes. Because you have been sedated (given medication to make you sleep) it is important that you arrange for someone else to drive you home.
Some patients may experience discomfort after the procedure, due to air remaining in the colon.
Gastroscopy allows examination of the upper part of your digestive tract i.e. oesophagus (food pipe), stomach and duodenum (top section of the small intestine), by passing a gastroscope (long, flexible tube with a camera on the end) through your mouth and down your digestive tract. Images from the camera are displayed on a television monitor. Sometimes a small tissue sample (biopsy) will need to be taken during the procedure for later examination at a laboratory. Gastroscopy may be used to diagnose peptic ulcers, tumours, gastritis etc. Complications from this procedure are very rare but can occur. They include: bleeding if a biopsy is performed; allergic reaction to the sedative or throat spray; perforation (tearing) of the stomach with the instrument (this is a serious but extremely rare complication). What to expect All endoscopic procedures are viewed as a surgical procedure and generally the same preparation will apply. You will not be able to eat or drink anything for 6 hours before your gastroscopy. When you are ready for the procedure, the back of your throat will be sprayed with anaesthetic. You will also be offered medication (a sedative) to make you go into a light sleep. This will be given by an injection into a vein in your arm or hand. The gastroscopy will take approximately 15 minutes, but you will probably sleep for another 30 minutes. You will spend some time in a recovery unit (probably 1-2 hours) to sleep off the sedative and to allow staff to monitor you (take blood pressure readings etc). Because you have been sedated (given medication to make you sleep) it is important that you arrange for someone else to drive you home. If biopsies are taken for examination, your GP will be sent the results within 2-3 weeks.
Gastroscopy allows examination of the upper part of your digestive tract i.e. oesophagus (food pipe), stomach and duodenum (top section of the small intestine), by passing a gastroscope (long, flexible tube with a camera on the end) through your mouth and down your digestive tract. Images from the camera are displayed on a television monitor. Sometimes a small tissue sample (biopsy) will need to be taken during the procedure for later examination at a laboratory. Gastroscopy may be used to diagnose peptic ulcers, tumours, gastritis etc. Complications from this procedure are very rare but can occur. They include: bleeding if a biopsy is performed; allergic reaction to the sedative or throat spray; perforation (tearing) of the stomach with the instrument (this is a serious but extremely rare complication). What to expect All endoscopic procedures are viewed as a surgical procedure and generally the same preparation will apply. You will not be able to eat or drink anything for 6 hours before your gastroscopy. When you are ready for the procedure, the back of your throat will be sprayed with anaesthetic. You will also be offered medication (a sedative) to make you go into a light sleep. This will be given by an injection into a vein in your arm or hand. The gastroscopy will take approximately 15 minutes, but you will probably sleep for another 30 minutes. You will spend some time in a recovery unit (probably 1-2 hours) to sleep off the sedative and to allow staff to monitor you (take blood pressure readings etc). Because you have been sedated (given medication to make you sleep) it is important that you arrange for someone else to drive you home. If biopsies are taken for examination, your GP will be sent the results within 2-3 weeks.
Gastroscopy allows examination of the upper part of your digestive tract i.e. oesophagus (food pipe), stomach and duodenum (top section of the small intestine), by passing a gastroscope (long, flexible tube with a camera on the end) through your mouth and down your digestive tract. Images from the camera are displayed on a television monitor. Sometimes a small tissue sample (biopsy) will need to be taken during the procedure for later examination at a laboratory.
Gastroscopy may be used to diagnose peptic ulcers, tumours, gastritis etc.
Complications from this procedure are very rare but can occur. They include: bleeding if a biopsy is performed; allergic reaction to the sedative or throat spray; perforation (tearing) of the stomach with the instrument (this is a serious but extremely rare complication).
What to expect
All endoscopic procedures are viewed as a surgical procedure and generally the same preparation will apply. You will not be able to eat or drink anything for 6 hours before your gastroscopy. When you are ready for the procedure, the back of your throat will be sprayed with anaesthetic. You will also be offered medication (a sedative) to make you go into a light sleep. This will be given by an injection into a vein in your arm or hand.
The gastroscopy will take approximately 15 minutes, but you will probably sleep for another 30 minutes. You will spend some time in a recovery unit (probably 1-2 hours) to sleep off the sedative and to allow staff to monitor you (take blood pressure readings etc). Because you have been sedated (given medication to make you sleep) it is important that you arrange for someone else to drive you home.
If biopsies are taken for examination, your GP will be sent the results within 2-3 weeks.
Laparoscopic: several small incisions (cuts) are made in the abdomen and a narrow tube with a tiny camera attached (laparoscope) is inserted. This allows the surgeon a view of the colon (also called bowel or large intestine) and, by inserting small surgical instruments through the other cuts, part or all of the colon can be removed. The two healthy ends of the colon are stitched back together (resected). Open: an abdominal incision is made and part or all of the colon is removed.
Laparoscopic: several small incisions (cuts) are made in the abdomen and a narrow tube with a tiny camera attached (laparoscope) is inserted. This allows the surgeon a view of the colon (also called bowel or large intestine) and, by inserting small surgical instruments through the other cuts, part or all of the colon can be removed. The two healthy ends of the colon are stitched back together (resected). Open: an abdominal incision is made and part or all of the colon is removed.
Laparoscopic: several small incisions (cuts) are made in the abdomen and a narrow tube with a tiny camera attached (laparoscope) is inserted. This allows the surgeon a view of the colon (also called bowel or large intestine) and, by inserting small surgical instruments through the other cuts, part or all of the colon can be removed. The two healthy ends of the colon are stitched back together (resected).
Open: an abdominal incision is made and part or all of the colon is removed.
Laparoscopic: several small incisions (cuts) are made in the abdomen (stomach) and a narrow tube with a tiny camera attached (laparoscope) is inserted. This allows the surgeon to view the rectum and, by inserting small surgical instruments through the other cuts, part or all of the rectum can be removed. Open: an abdominal incision is made and part or all of the rectum removed.
Laparoscopic: several small incisions (cuts) are made in the abdomen (stomach) and a narrow tube with a tiny camera attached (laparoscope) is inserted. This allows the surgeon to view the rectum and, by inserting small surgical instruments through the other cuts, part or all of the rectum can be removed. Open: an abdominal incision is made and part or all of the rectum removed.
Laparoscopic: several small incisions (cuts) are made in the abdomen (stomach) and a narrow tube with a tiny camera attached (laparoscope) is inserted. This allows the surgeon to view the rectum and, by inserting small surgical instruments through the other cuts, part or all of the rectum can be removed.
Open: an abdominal incision is made and part or all of the rectum removed.
This is cancer that begins in your colon or rectum. Often, it may start as a polyp which is a growth of abnormal tissue on the lining of the colon or rectum. Most people will not have symptoms of colorectal cancer until the disease is at a fairly advanced stage. Then they may experience symptoms such as: • change in bowel habit that lasts for more than a few days • blood in the stool • stomach pain. Tests used to confirm a diagnosis of colorectal cancer include: • stool blood test – a sample of stool is tested for traces of blood • sigmoidoscopy • colonoscopy • barium enema – a chalky white substance (barium) and air are pumped into the colon and x-rays are taken • biopsy – a small piece of tissue is removed for examination under a microscope. Stool blood tests, sigmoidoscopy, colonoscopy and barium enemas are also used as screening tests to look for colorectal cancer in people without symptoms. If these tests find cancers at an early stage, the chances of successful treatment are much higher than when the cancers are further advanced. Screening tests can also involve the removal of polyps that may become cancerous in the future. Treatment The choice of treatment depends on your overall health as well as how far advanced the cancer is. This is determined in a process known as ‘staging’ in which the tumour size, lymph node involvement and spread to other organs is assessed. The three main forms of treatment for colorectal cancer are: Surgery – the most common treatment. Surgery may involve ‘Open Surgery’ in which a large incision (cut) is made in your abdomen or ‘Laparoscopic Surgery’ in which several much smaller incisions are made. The section of the colon or rectum with the cancer is removed and the two ends are reconnected. In some cases, a temporary or permanent colostomy may be required to remove body wastes. Chemotherapy – anticancer medicines, either taken by mouth (oral) or injected into a vein (intravenous), can destroy cancer cells and slow tumour growth. Chemotherapy is useful to treat cancers that have spread to other parts of the body and may also be used before or after surgery or in combination with radiation therapy. Radiation Therapy – high energy x-rays are used to destroy cancer cells or shrink tumours. It is often used together with surgery, in some cases to shrink the tumour before surgery, or to destroy any cells that may be left behind after surgery.
This is cancer that begins in your colon or rectum. Often, it may start as a polyp which is a growth of abnormal tissue on the lining of the colon or rectum. Most people will not have symptoms of colorectal cancer until the disease is at a fairly advanced stage. Then they may experience symptoms such as: • change in bowel habit that lasts for more than a few days • blood in the stool • stomach pain. Tests used to confirm a diagnosis of colorectal cancer include: • stool blood test – a sample of stool is tested for traces of blood • sigmoidoscopy • colonoscopy • barium enema – a chalky white substance (barium) and air are pumped into the colon and x-rays are taken • biopsy – a small piece of tissue is removed for examination under a microscope. Stool blood tests, sigmoidoscopy, colonoscopy and barium enemas are also used as screening tests to look for colorectal cancer in people without symptoms. If these tests find cancers at an early stage, the chances of successful treatment are much higher than when the cancers are further advanced. Screening tests can also involve the removal of polyps that may become cancerous in the future. Treatment The choice of treatment depends on your overall health as well as how far advanced the cancer is. This is determined in a process known as ‘staging’ in which the tumour size, lymph node involvement and spread to other organs is assessed. The three main forms of treatment for colorectal cancer are: Surgery – the most common treatment. Surgery may involve ‘Open Surgery’ in which a large incision (cut) is made in your abdomen or ‘Laparoscopic Surgery’ in which several much smaller incisions are made. The section of the colon or rectum with the cancer is removed and the two ends are reconnected. In some cases, a temporary or permanent colostomy may be required to remove body wastes. Chemotherapy – anticancer medicines, either taken by mouth (oral) or injected into a vein (intravenous), can destroy cancer cells and slow tumour growth. Chemotherapy is useful to treat cancers that have spread to other parts of the body and may also be used before or after surgery or in combination with radiation therapy. Radiation Therapy – high energy x-rays are used to destroy cancer cells or shrink tumours. It is often used together with surgery, in some cases to shrink the tumour before surgery, or to destroy any cells that may be left behind after surgery.
This is cancer that begins in your colon or rectum. Often, it may start as a polyp which is a growth of abnormal tissue on the lining of the colon or rectum.
Most people will not have symptoms of colorectal cancer until the disease is at a fairly advanced stage. Then they may experience symptoms such as:
• change in bowel habit that lasts for more than a few days
• blood in the stool
• stomach pain.
Tests used to confirm a diagnosis of colorectal cancer include:
• stool blood test – a sample of stool is tested for traces of blood
• sigmoidoscopy
• colonoscopy
• barium enema – a chalky white substance (barium) and air are pumped into the colon and x-rays are taken
• biopsy – a small piece of tissue is removed for examination under a microscope.
Stool blood tests, sigmoidoscopy, colonoscopy and barium enemas are also used as screening tests to look for colorectal cancer in people without symptoms. If these tests find cancers at an early stage, the chances of successful treatment are much higher than when the cancers are further advanced. Screening tests can also involve the removal of polyps that may become cancerous in the future.
Treatment
The choice of treatment depends on your overall health as well as how far advanced the cancer is. This is determined in a process known as ‘staging’ in which the tumour size, lymph node involvement and spread to other organs is assessed.
The three main forms of treatment for colorectal cancer are:
Surgery – the most common treatment. Surgery may involve ‘Open Surgery’ in which a large incision (cut) is made in your abdomen or ‘Laparoscopic Surgery’ in which several much smaller incisions are made. The section of the colon or rectum with the cancer is removed and the two ends are reconnected. In some cases, a temporary or permanent colostomy may be required to remove body wastes.
Chemotherapy – anticancer medicines, either taken by mouth (oral) or injected into a vein (intravenous), can destroy cancer cells and slow tumour growth. Chemotherapy is useful to treat cancers that have spread to other parts of the body and may also be used before or after surgery or in combination with radiation therapy.
Radiation Therapy – high energy x-rays are used to destroy cancer cells or shrink tumours. It is often used together with surgery, in some cases to shrink the tumour before surgery, or to destroy any cells that may be left behind after surgery.
General surgery covers some disorders of the liver and biliary system. The most common of these is pain caused by gallstones. These are formed if the gallbladder is not working properly, and the standard treatment is to remove the gallbladder (cholecystectomy). This procedure is usually performed using a laparoscopic (keyhole) approach.
General surgery covers some disorders of the liver and biliary system. The most common of these is pain caused by gallstones. These are formed if the gallbladder is not working properly, and the standard treatment is to remove the gallbladder (cholecystectomy). This procedure is usually performed using a laparoscopic (keyhole) approach.
General surgery covers some disorders of the liver and biliary system. The most common of these is pain caused by gallstones. These are formed if the gallbladder is not working properly, and the standard treatment is to remove the gallbladder (cholecystectomy). This procedure is usually performed using a laparoscopic (keyhole) approach.
A hernia exists where part of the abdominal wall is weakened, and the contents of the abdomen push through to the outside. This is most commonly seen in the groin area but can occur in other places. Surgical treatment is usually quite straightforward and involves returning the abdominal contents to the inside and then reinforcing the abdominal wall in some way.
A hernia exists where part of the abdominal wall is weakened, and the contents of the abdomen push through to the outside. This is most commonly seen in the groin area but can occur in other places. Surgical treatment is usually quite straightforward and involves returning the abdominal contents to the inside and then reinforcing the abdominal wall in some way.
A hernia exists where part of the abdominal wall is weakened, and the contents of the abdomen push through to the outside. This is most commonly seen in the groin area but can occur in other places. Surgical treatment is usually quite straightforward and involves returning the abdominal contents to the inside and then reinforcing the abdominal wall in some way.
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.
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.
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Contact Details
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Phone
(09) 441 2750
Healthlink EDI
waitemas
Waitemata Endoscopy
Southern Cross Hospital - North Harbour
(09) 441 2686
13E Maki Street
Westgate
Auckland
Street Address
13E Maki Street
Westgate
Auckland
15 Shea Terrace, Takapuna, Auckland
North Auckland
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Phone
(09) 441 2750
Healthlink EDI
waitemas
Silverdale Medical Centre, 7 Polarity Rise, Silverdale, Auckland
North Auckland
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Phone
(09) 441 2750
Healthlink EDI
waitemas
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This page was last updated at 9:13AM on August 11, 2022. This information is reviewed and edited by Mr John Jarvis - General & Colorectal Surgeon.