Assoc. Prof. Gary Crosthwaite

Upper Gastrointestinal and Cancer Surgeon

Assoc. Prof. Gary Crosthwaite
Assoc. Prof. Gary Crosthwaite

Assoc. Prof. Crosthwaite is a recognised Upper Gastrointestinal and Cancer surgeon in Melbourne.

While Assoc. Prof. Crosthwaite has broad experience in many aspects of general surgery his sub specialties focus specifically on treatments for the following:

  • Upper Gastrointestinal Cancer
  • Gastric Reflux Conditions
  • Oesophageal Achalasia and POEM
  • Hiatal Hernia
  • Upper Gastrointestinal Disease, and
  • Gallbladder Disease



  • MB BS, Melbourne University


  • Fellow of the Royal Australasian College of Surgeons (1992)


  • Medical Board of Victoria

Post Graduate Training

  • Research Fellow University of Melbourne
  • Senior Anatomy Tutor University of Melbourne
  • Senior Fellow University Department of Surgery Royal Melbourne Hospital
  • Senior Registrar Advanced laparoscopy and Upper GI Surgery with Professor Sir Alfred Cuschieri Ninewells Hospital Dundee


Assoc. Prof. Crosthwaite has brought to Australia and pioneered many new laparoscopic techniques and approaches to advanced surgery.

Most recently he has introduced Per-oral Endoscopic Myotomy (POEM) a new non-invasive technique for the management of Achalasia.


Clinical Appointments

  • Clinical Director General Surgery and Gastroenterology Clinical Institute Epworth Healthcare
  • Consultant Upper GI Surgeon Royal Melbourne Hospital
  • Visiting Surgeon Royal Womens Hospital

Private Hospitals Appointments

  • Epworth Hospital
  • Melbourne Private Hospital
  • Avenue Hospital

Other Appointments

  • Senior Fellow, Melbourne University Department of Surgery, at Royal Melbourne Hospital
  • Convener of Melbourne Upper GI Surgeons Group
  • Reviewer ANZ Journal of Surgery / Australian Medical Journal / Journal Medical Imaging and Radiation Oncology / Journal Obesity Surgery
  • Clinical reviewer for AHPRA
  • RACS Regional Training Board member

Past Appointments

  • Chair of Training for Australian and New Zealand Gastric and Oesophageal Surgery Association (ANZGOSA)
  • Board member of Australia and New Zealand, Gastric and Oesophageal Surgery Association
  • Head of UGI/HPB Unit Royal Melbourne Hospital
  • Chair Upper GI Tumour Stream Western and Central Metropolitan Integrated Cancer Service

Aid Work

  • 2013 Member GeFit Training Group Fiji


  • Medical Board of Victoria

Professional Memberships

  • Australian Medical Association
  • International Society of Diseases of the Oesophagus
  • Australia and New Zealand Gastro Oesophageal Surgery Association
  • Founding member of the Centre for Bariatric Surgery
  • Obesity Surgical Society of Australia and New Zealand


  • Per-oral endoscopic myotomy (POEM): overview and experience of 100 cases by a single surgeon in Australia Gary L. Crosthwaite1,2, Magdalena Sejka1 Ann Esophagus 2020;3:12
  • Update in achalasia: what the surgeon needs to know.
    Hamer PW, Holloway RH, Crosthwaite G, Devitt PG, Thompson SK. ANZ J Surg. 2016 Mar 18.
  • Predictors of outcome after surgery for gastric cancer in a Western cohort. Pattison S, Mann GB, Crosthwaite G, Lade S, Mitchell C, Leong T, Busuttil RA, Boussioutas A. ANZ J Surg. 2014 Nov 12.
  • Hui A,Crosthwaite G, Mitchell P, Asadi H. Early angiography and clot retrieval in treatment of acute superior mesenteric artery embolus. ANZ J Surg. 2014 Aug 14.
  • J Jones, A Cichowitz, G Crosthwaite, Endoscopic ultrasound-guided fine needle aspiration as a diagnostic tool for gastric glomus tumours. Aust N.Z.J.Surg, 2012, Jan (82)
  • Paul Robert Burton, Wendy A. Brown, Cheryl Laurie, Anna Korin, Kenneth Yap, Melissa Richards, John Owens, Gary Crosthwaite, Geoff Hebbard and Paul E. O’Brien Pathophysiology of Laparoscopic Adjustable Gastric Bands: Analysis and Classification Using High-Resolution Video Manometry and a Stress Barium Protocol Obes Surg. 2010 Jan; 20(1):19-29. Epub 2009 Sep 18
  • Smart P, Cullinan M, Crosthwaite G, Spontaneous splenic rupture secondary to metastatic gastric carcinoma: case report and review. ANZ J Surg. 2002 Feb: 72(2)153-5
  • Sengupta S, Crosthwaite G, One minute unbuffered urease test: should it be read at 10 minutes? Gut. 2000 Jul; 47(1):155-6 Chu P, Crosthwaite GL Gastric foreign bodies:no longer a cross to bear Aust N.Z.J.Surg, 1999
  • Hensman C, Crosthwaite G, Cuschieri A. Transcystic biliary decompression after direct laparoscopic exploration of the common bile duct. Surg Endosc 1997 Nov: 11(11) 1106-110
  • Crosthwaite G, Leather A. Meckels Diverticulum, The ultimate diagnostic tool for bleeding Meckle’s diverticulum. Aust N.Z.J. Surg, 1997, April, 67(4)
  • Cuschieri A, Crosthwaite G, Shimi S, Pietrabissa A, Joypaul V, Tait, I, Naziri W. Hepatic cryotherapy for liver tumours. Development and clinical evaluation of high efficiency insulated multineedle probe system for open and laparoscopic use. Surg Endosc (1995) 9:483-489
  • Crosthwaite GL, Cuschieri A, Chung T, Dunkley P, Shimi S, Cuschieri A Influence of Imaging Systems on Surgical Task Efficiency in Endoscopic Surgery: Comparison of Direct Vision and Electronic Display with 2D and 3D Systems. Br. J. Surg. 1995,82 ,849-851
  • Cuschieri A, Shimi S M, Crosthwaite GL, and Joypaul V Bilateral Splanchnicectomy through a Posterior Thorascopic Approach J R Coll. Surg. Edinb, 39, Feb 1994, 44-47
  • Crosthwaite G, Joypaul BV, Cuschieri A Thoracoscopic Management of Thoracic Duct Injury J R Coll Surg Edinb., 40, 1995.303-304
  • Hanna GB, Joypaul BV, Wheeldon NM, Crosthwaite GL, Cuschieri A Post Traumatic Pericardial Syndrome Following Oesophageal Surgery. J R Coll Surg Edinb., 40, 1995.395-396
  • Crosthwaite GL, Cuschieri A, Chung T, Dunkley P, Shimi S, Cuschieri A Influence of Imaging Systems on Surgical Task Efficiency in Endoscopic Surgery: Comparison of direct Vision and Electronic Display with 2D and 3D Systems. Br.J.Surg. 1995 June 82(6) 849-851
  • Crosthwaite GL, McKay C., Anderson J.R. Laparoscopic Subtotal Cholecystectomy J R Coll. Surg Edinb.,40, Feb 1995 20-21
  • Crosthwaite GL, Taylor G.I. and Palmer J.H. A new Radio-Opaque Injection Technique for Tissue Preservation British Journal of Plastic Surgery (1987), 40, 497-501
  • Oziemski M.A., Billson V.R., Crosthwaite G.L., Varigos G.A. A New Treatment for Acquired Reactive Perforating Collangenosis Australas J. Dermatol. (1991), 32, 71-74


2015 ISDEAS/ANZGOSA Meeting Invited Lecture NOTES to POEM

2014 RACS ASC Invited Lecture “Complex Peptic Ulcer Disease”

2014 Surgical Forum presentation “NOTES”

2013 Victorian Medical Post Graduate Foundation invited lecturer 2011 RACS ASC Achalasia Masterclass

2011 AGITG Linitis Plastica – Should we resect?

2010 RACS ASC (Perth) Follow up Guidelines for Upper GI Cancer”

2010 RACS ASC (Perth) The Perfect Myotomy for Achalasia

  • Obesity Surgery Society of Australia & New Zeland
  • The International Society for Diseases of the Esophagus
  •  Australia &New Zeland Gastric & Oesophageal Surgery Association
  • Epworth Healthcare
  • Fellow of the Royal Australian College of Surgeons