Mr Marios Konstantinos Tasoulis

Mr. Marios Konstantinos Tasoulis is a consultant breast surgeon at the Women’s Health Centre, located at 27-29 Harley Street, and a member of the Leaders in Breast Surgery practice, both part of HCA Healthcare UK. His expertise lies in oncoplastic and reconstructive breast surgery, with a particular focus on surgical de-escalation following neoadjuvant systemic therapy. Mr Tasoulis offers a wide range of procedures for the surgical management of breast cancer including breast conserving surgery with oncoplastic remodelling, nipple and skin sparing mastectomy and breast reconstruction. He also has a special interest in the management of breast implant-associated anaplastic large cell lymphoma (BIA-ALCL), an uncommon type of blood cancer that has been linked with some types of breast implants. Mr. Tasoulis completed his medical degree at the National and Kapodistrian University of Athens, where he also earned his PhD in 2012 and underwent his surgical training. He was awarded scholarships for both his undergraduate and postgraduate education. He received a prestigious fellowship from the European Society of Surgical Oncology (ESSO) and served as a Visiting Assistant Professor in the Breast Unit at Yale University before joining The Royal Marsden Hospital where his NHS Practice is based. Mr Tasoulis is also committed in education and training. At The Royal Marsden, Mr. Tasoulis leads the National Advanced Training in Oncoplastic Breast Surgery Fellowship. He teaches on courses at The Royal College of Surgeons of England and is member of the Surgical Trainers Faculty at The Royal College of Surgeons of Edinburgh. Additionally, he serves as an examiner for the European Board Exam in Breast Surgery and is a member of the American Society of Breast Surgeons (ASBrS) Oncoplastic Breast Surgery Certification Task Force. In 2023, Mr Tasoulis graduated from the prestigious American Society of Clinical Oncology (ASCO) Education Scholars Program, for leaders in medical education and he is also regularly mentoring young oncology professionals via the ASCO mentoring program.  In addition to his clinical work, Mr. Tasoulis is actively involved in research. He has served as Chief Investigator and Local Principal Investigator on multiple international and national studies and has contributed to steering committees for international clinical trials. He has published extensively in peer-reviewed journals and is an associate editor for breast cancer at the European Journal of Surgical Oncology (EJSO). Mr. Tasoulis is frequently invited to speak at scientific conferences in Europe, Australia, Asia, and South America.

"Evidence-based care tailored to each patient — taking the time to explain options and shared decisions."

1. 2014–2020
   MD · Medicine and Surgery

   Universidad de Navarra

2. 2020–2024
   Residency · Breast Surgery

   Universitat de València

1. 2024-09–2025-08
   Junior consultant

   Universidad de Navarra Teaching Hospital — Breast Surgery

1. 1 Choose a slot
2. 2 Brief pre-consult form
3. 3 Consultation
4. 4 Follow-up note & plan

Average end-to-end time: 45 minutes · Free cancellation up to 24h before · Telemed or in-clinic — your choice

h-index: 20 · i10: 11

Selected publications

1. Validation of clinical scoring in Breast Surgery

   Mr Marios Konstantinos Tasoulis, et al. · European Journal of Medicine, 2026

   DOI: 10.8241/euroclin.2026.0 · cited by 44

2. Long-term follow-up of Breast Surgery across

   Mr Marios Konstantinos Tasoulis, et al. · European Journal of Medicine, 2025

   DOI: 10.4911/euroclin.2025.1 · cited by 134

3. Validation of clinical scoring in Breast Surgery

   Mr Marios Konstantinos Tasoulis, et al. · European Journal of Medicine, 2024

   DOI: 10.1976/euroclin.2024.2 · cited by 48

• Patient education Patient guide to Breast Surgery 2026-03-20 · 7 min read
• Awareness When should you see a breast surgery? 2026-01-08 · 10 min read