Home › Services

Services

Gastroenterology services in Sydney

A general gastroenterology and liver practice, with a particular focus on inflammatory bowel disease and on preventing gastrointestinal cancer. Referrals are welcome for new diagnoses, second opinions and complex or treatment-refractory disease, and there is a page of information for referring doctors.

Procedures

Endoscopy

Procedures are performed at accredited private hospitals and day surgeries with specialist anaesthetists, and most people go home the same day.

Procedure

Colonoscopy

Preparation, sedation, what happens on the day, cost and when the next one is due.

Gastroscopy

Examining the oesophagus and stomach, why it is done and what can be treated at the same time.

Polyp removal and EMR

Removing large and flat polyps at colonoscopy instead of by bowel surgery.

Stricture dilatation

Stretching narrowings of the bowel and oesophagus, especially in Crohn's disease.

Intragastric balloon

Endoscopic weight procedures alongside medical weight management.

Diagnostic endoscopy

Gastroscopy (upper endoscopy)
Colonoscopy
Flexible sigmoidoscopy
Capsule endoscopy

Therapeutic endoscopy

Polyp removal (polypectomy)
Endoscopic mucosal resection (EMR)
Control of gastrointestinal bleeding
Injection and clipping of bleeding lesions
Balloon dilatation of oesophageal, ileal and colonic strictures
Management of food bolus obstruction
Treatment of bleeding haemorrhoids (banding)
Surveillance colonoscopy for inflammatory bowel disease
Upper gastrointestinal cancer surveillance
Insertion and removal of intragastric balloons

Conditions

Conditions treated

All aspects of general gastroenterology and liver disease with a special interest in inflammatory bowel disease and the prevention of gastrointestinal cancer.

Condition

Crohn's disease and ulcerative colitis

Diagnosis, treatment, monitoring, pregnancy and second opinions.

Prevention

Bowel cancer screening

The national program, getting a kit from 45 and family history.

A positive screening test Bowel cancer under 50 When the next one is due

Reflux and GORD

Heartburn that will not settle, and what to do when the tablets are not working.

Barrett's oesophagus

Eosinophilic oesophagitis

Why food sticks, and why allergy testing does not find the trigger foods.

Condition

Indigestion and functional dyspepsia

When a gastroscopy is worth doing, and what helps once it is normal.

Condition

Helicobacter pylori

Testing, treatment and the repeat test that confirms it has gone.

Irritable bowel syndrome

Diagnosis, what to rule out, diet and gut-brain treatments.

Condition

Chronic diarrhoea

Loose stools for more than four weeks, and the causes most often missed.

Microscopic colitis

Watery diarrhoea with a normal colonoscopy, diagnosed on biopsies.

Chronic constipation

The three patterns behind it and what actually works.

Rectal bleeding

What causes it, what the colour means and who needs a colonoscopy.

Diverticular disease

What diverticulosis means and the real risk of diverticulitis.

Abnormal liver function tests

What the numbers mean, which pattern matters and how the cause is found.

Condition

Fatty liver disease (MASLD)

Assessing liver scarring and what actually improves it.

Condition

Coeliac disease

Testing, why not to stop gluten first and follow-up.

Iron deficiency

Why low iron is often a gut question.

Weight management

Medical and endoscopic weight management, with a team.

Reflux and swallowing disorders

Gastro-oesophageal reflux disease (GORD)
Barrett's oesophagus
Difficulty swallowing (dysphagia)
Oesophageal strictures, rings and webs
Eosinophilic oesophagitis
Hiatus hernia

Stomach and upper bowel conditions

Gastritis
Helicobacter pylori infection
Peptic ulcer disease
Functional dyspepsia
Indigestion
Upper gastrointestinal bleeding

Bowel and functional disorders

Inflammatory bowel disease

Ulcerative colitis
Crohn's disease
Stricturing Crohn's disease
Microscopic colitis

Malabsorption and nutritional disorders

Coeliac disease
Iron deficiency related to gastrointestinal disease
Malabsorption syndromes
Small intestinal bacterial overgrowth (SIBO)

Colorectal and anal conditions

Haemorrhoids
Anal fissures
Colon and rectal polyps

Liver, gallbladder and pancreas conditions

Fatty liver disease (MASLD)
Abnormal liver function tests
Gallstone disease
Pancreatitis
Bile duct disorders

Cancer prevention and surveillance

Colorectal cancer screening
Faecal occult blood test (FOBT)
Polyp surveillance and removal
Barrett's oesophagus surveillance
Early gastrointestinal cancer assessment
Early-onset bowel cancer
Surveillance colonoscopy intervals

Weight and metabolic health

Medical weight management
Endoscopic intragastric balloon
Fatty liver disease and weight
Reflux related to weight
Gastrointestinal effects of GLP-1 medications
Assessment before and after bariatric surgery

Practical questions about referrals, fees and appointments are answered in the patient FAQs.

Weight management

Endoscopic and medical weight management

Weight sits behind a good deal of gastroenterology, from reflux and fatty liver disease through to the risk of bowel cancer itself, and it is part of the practice rather than a sideline to it.

A/Prof Kariyawasam sees patients for medical weight management and performs endoscopic weight procedures, including the insertion and later removal of intragastric balloons, through Healthy Weight Australia, a multidisciplinary weight management service. Patients taking weight or diabetes medicines are also seen for the gastrointestinal side of that treatment and for what it means when an endoscopy is being planned.

What weight management involves, in full

Your visit

What to expect

Before your appointment

Bring your referral, a list of your current medications and any previous endoscopy reports, imaging or blood results. If you have had tests elsewhere, ask for copies, as that often saves repeating them. Medicare requires a current referral for the specialist rebate to apply.

At the first consultation

A/Prof Kariyawasam will go through your symptoms and history in detail, examine you and agree on a plan with you. That may mean blood or stool tests, imaging or booking a colonoscopy or gastroscopy. If you have inflammatory bowel disease, the conversation covers what your disease is doing now and what the treatment is aiming for, which is healing of the bowel lining and not simply short-term relief.

Afterwards

Your GP receives a letter after each visit. For patients on biologic or immunosuppressive therapy, follow-up is built around regular monitoring of bloods, faecal calprotectin and drug levels, so that treatment can be adjusted early.

Common patient questions

Make an appointment

Appointments are booked through the rooms directly. Have your GP referral ready when you call or ask your GP to send it ahead. Urgent inflammatory bowel disease, rectal bleeding and positive bowel screening referrals are prioritised.

Norwest & Rouse Hill (02) 8530 1800 Pennant Hills (02) 9875 2311 Macquarie Park (02) 9812 3880

Book an appointment Contact & referrals