
General Surgery, Tan Tock Seng Hospital
Dr Aloysius Tan is a Consultant Surgeon in the Department of General Surgery. His main areas of interest include colorectal surgery, general surgery, minimally invasive and robotic surgery, endoscopy, and the management of pelvic floor disorders.
Dr Tan obtained his Specialist Accreditation in General Surgery in 2019. He then completed two advanced fellowships overseas — one in Minimally Invasive Colorectal Surgery at Severance Hospital in Seoul, and another in Pelvic Floor Surgery at the Royal Brisbane and Women’s Hospital in Australia. These experiences gave him valuable expertise in performing complex colorectal and pelvic floor procedures using modern, less invasive techniques.
In his practice, Dr Tan believes that every patient deserves care that is tailored to their individual needs. He takes time to understand each person’s condition, lifestyle, and goals before recommending treatment. His approach emphasises careful preparation before surgery, smooth recovery after surgery, and ongoing support throughout the patient’s journey.
Dr Tan also believes that good surgical care extends beyond the operating room. He encourages his patients to take an active role in maintaining their health — through regular exercise, balanced nutrition, and healthy lifestyle habits. He is passionate about helping patients recover well and stay healthy for the long term.
Publications
1. Feasibility and safety of minimally invasive multivisceral resection for T4b rectal cancer: A 9-year review.
2. Short term outcomes of minimally invasive selective lateral pelvic lymph node dissection for low rectal cancer.
3. SARS-CoV-2 infection and venous thromboembolism after surgery: an international prospective cohort study
4. Effects of pre-operative isolation on postoperative pulmonary complications after elective surgery: an international prospective cohort study.
5. Timing of Surgery following SARS-CoV2 infection: an international prospective cohort study.
6. SARS-CoV-2 vaccination modelling for safe surgery to save lives: data from an international prospective cohort study.
7. Global variation in postoperative mortality and complications after cancer surgery: a multicentre, prospective cohort study in 82 countries

