Ahmad is a Melbourne based Upper Gastrointestinal and Bariatric Surgeon. He is Head of Upper GI Surgery at the Austin Hospital, Melbourne and is Clinical Associate Professor with the University of Melbourne. Ahmad has clinical, teaching and research interests in advanced laparoscopic surgery, reflux, Barretts and OG Cancer as well as Bariatric surgery. Specific areas of interest in bariatrics include mechanisms of surgery, the role of revisional surgery and modern metabolic care. He is a strong advocate for equity of access and is currently leading the development of a National Framework For Delivery of Bariatric Surgery in public hospitals Ahmad has performed over 3000 bariatric procedures and his practice encompasses gastric banding, sleeve gastrectomy, gastric bypass, endotherapeutic techniques and complex revisional bariatric surgery. Ahmad is a regular contributor to national and international meetings with over 100 presentations and more than 40 peer reviewed publications and 6 book chapters. He is representative on several professional associations and advisory bodies in Upper GI surgery and bariatric surgery including having served as President of ANZMOSS, an executive board member of ANGOSA and on the Executive Board of IFSO as Member at Large of IFSO – APC.
Selected publications from PubMed
ASO Visual Abstract: Multimodal Prehabilitation and Outcomes after Gastroesophageal Cancer Surgery: A Cohort Study of Pulmonary Complications and Resilience to Major Postoperative Events.
Liu DS, Le KDR, Cacic J, Ukovic B, Mellerick C, Binion B, Ishak G, Turner J, Wilson C, Johnson L, Suryanarayan N, Weinberg L, Ferguson M, Lanteri C, Brazzale D, Ma R, Dalyell A, Hall K, Watson L, Chapman B, Keong B, Mori K, Aly A, Wong D, Bigaran A, Strong for Oesophago-Gastric Cancer Surgery (SOCS) study group
Ann Surg Oncol. 2026 Jul 13 doi: 10.1245/s10434-026-19984-5.
Pre- and Post-Treatment Predictive Models of Peritoneal Recurrence After Fluorouracil, Leucovorin, Oxaliplatin, and Docetaxel-Chemotherapy and Surgery: An International Study.
Lee MM, Wong DJ, Hall K, Duong CP, Watson DI, Donohoe CL, Bright T, Aly A, Chan K, Chan DL, Merrett N, Gananadha S, Lam YH, Kanhere H, Smithers BM, Bozin M, Read M, Mori K, Johnson MA, Wong E, Martin SA, Ooi G, Al-Habbal Y, Liew CH, Bohmer R, Daruwalla J, Ballal M, Ranjan R, MacCormick AD, Pattison S, Evennett N, Robertson J, Tan J, Gordon A, Bann S, Samarasam I, Gurunathan R, So J, Yeung J, Ferri L, Griffiths EA, Phillips AW, Markar SR, Chan D, Murphy T, Reynolds J, Nilsson M, Piessen G, Wijnhoven B, van Hillegersberg R, van Berge Henegouwen MI, Lombardi PM, Clemons NJ, Allan Z, Hamilton AJ, Liu DS, SPACE-FLOT Investigators
JCO Precis Oncol. 2026 Jul;10(7):e2501145 doi: 10.1200/PO-25-01145.
Study of the Role of Circulating Cell-Free DNA in the Diagnosis of Cholangiocarcinoma.
El-Khaiat MM, El Hagary HM, Aly AAE, Nada AS, Ei-Abd MG, Abourisha KA, Teima AAA
Asian Pac J Cancer Prev. 2026 Jul 1;27(7):2697-2703 doi: 10.31557/APJCP.2026.27.7.2697.
Multi-modal Prehabilitation and Outcomes after Gastroesophageal Cancer Surgery: A Cohort Study of Pulmonary Complications and Resilience to Major Postoperative Events.
Liu DS, Le KDR, Cacic J, Ukovic B, Mellerick C, Binion B, Ishak G, Turner J, Wilson C, Johnson L, Suryanarayan N, Weinberg L, Ferguson M, Lanteri C, Brazzale D, Ma R, Dalyell A, Hall K, Watson L, Chapman B, Keong B, Mori K, Aly A, Wong D, Bigaran A, Strong for Oesophago-gastric Cancer Surgery (SOCS) study group
Ann Surg Oncol. 2026 Jul 1 doi: 10.1245/s10434-026-19934-1.
Total versus subtotal gastrectomy following neoadjuvant flot chemotherapy for distal diffuse gastric adenocarcinoma: an international cohort study.
Sivakumar J, Wong DJ, Hall K, Lee MM, Duong CP, Watson DI, Donohoe CL, Bright T, Aly A, Chan K, Chan DL, Merrett N, Gananadha S, Lam YH, Kanhere H, Smithers B, Bozin M, Read M, Mori K, Johnson MA, Wong E, Martin SA, Ooi G, Al-Habbal Y, Liew CH, Bohmer R, Daruwalla J, Ballal M, Ranjan R, MacCormick AD, Pattison S, Evennett N, Robertson J, Tan J, Gordon A, Bann S, Samarasam I, Gurunathan R, So J, Yeung J, Ferri L, Griffiths EA, Phillips AW, Markar SR, Chan D, Murphy T, Reynolds J, Nilsson M, Piessen G, Wijnhoven B, van Hillegersberg R, van Berge Henegouwen MI, Lombardi PM, SPACE-FLOT Investigators, Liu DS
Gastric Cancer. 2026 Jul;29(4):827-840 doi: 10.1007/s10120-026-01746-7.
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