Dr Mathew Leonardi is an advanced gynaecological surgeon and sonologist (ultrasound specialist) at McMaster University Medical Centre in Hamilton, Canada. He has been awarded his PhD from the University of Sydney, which is focused on the utility of ultrasound in the diagnosis and surgical management of endometriosis. He is an honorary adjunct lecturer at the University of Adelaide. After completing a 2-year subspecialty fellowship training program under the supervision of Professor George Condous, Dr Leonardi became an expert in endometriosis excision surgery and gynaecological ultrasound. Since immersing himself in the clinical and academic world of endometriosis in 2017, he has published more than 60 peer-reviewed scientific articles and several textbook chapters, and presented at several international congresses (ISUOG, SEID, AAGL, AGES, WFUMB) on endometriosis. He has received numerous awards for his conference presentations on endometriosis. Now, Dr Leonardi is a nationally and internationally recognized leader in gynaecological surgery and ultrasound. He is an avid researcher, actively contributing academically to the advancement of women’s health. Dr Leonardi was appointed a World Endometriosis Society Junior Ambassador in January 2020 and founding member of the Next Generation Committee at the International Society of Ultrasound in Obstetrics and Gynecology. He is currently contributing to the Clinical Practice Guidelines on Endometriosis for the Society of Obstetricians and Gynaecologists of Canada. He is an Associate Editor for Reproduction & Fertility and on the Editorial Board for the Journal of Minimally Invasive Gynecology, and Ultrasound in Obstetrics and Gynecology.