Mr Marios K Tasoulis

Mr Marios K Tasoulis

General surgery 07160993

  • Fee assured
  • Open Referral network
Fee assured
Open Referral network

Specialises in

  • Breast surgery


  • Face-to-face consultations
  • Video and telephone consultations

About me

Mr Marios Konstantinos Tasoulis is a Consultant Oncoplastic Breast Surgeon with both his NHS and Private Practice based at The Royal Marsden.

Mr Tasoulis specialises in oncoplastic breast surgery with a special interest in surgical de-escalation (less extensive surgery) after neoadjuvant systemic therapy. To achieve this, he is working closely with the Breast Multidisciplinary Team (medical and radiation oncologists and plastic surgeons) to offer the best possible oncologic and aesthetic outcomes.

He also has an interest in the management of breast implant-associated anaplastic large cell lymphoma (BIA-ALCL), an uncommon type of blood cancer associated with breast implants.

Mr Tasoulis is the lead trainer at The Royal Marsden Hospital for the National Advanced Training in Oncoplastic Breast Surgery Fellowship. He teaches courses at The Royal College of Surgeons of England and was admitted to the Faculty of Surgical Trainers of The Royal College of Surgeons of Edinburgh.

Mr Tasoulis has served as a member of the American Society of Clinical Oncology (ASCO) Trainee Council (2017-2018) and is actively involved in mentoring young oncology professionals through the ASCO Virtual Mentoring Programme. Recently, he was admitted into the prestigious ASCO Education Scholars Program (Class of 2022-23) for leaders in medical education.

Mr Tasoulis is actively involved in clinical research. His main research interest includes the de-escalation of breast and axillary surgery in patients with exceptional response to neoadjuvant chemotherapy. He has been the Chief Investigator and local principal investigator on a number of national and international studies. He is part of national and international clinical trials steering committees and sits on the Research Committee of the American Society of Breast Surgeons.

Mr Tasoulis has presented his work in international meetings and has been invited to speak at conferences in Europe, Australia, Asia, and South America.

Medical secretaries

About me
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My private practice
Consultant's practices
Information for healthcare professionals

Information for healthcare professionals (Bupa patients only, last 12 months)

Procedures completed

  • B2880

    Excision biopsy of breast lesion after localisation - (1-5)

  • T9021

    Injection of magnetic lymphatic tracer and subsequent sentinel node mapping +/- sampling for breast cancer - (1-5)

  • T9000

    Sentinel node mapping and sampling with blue dye or radioactive probe for breast cancer - (1-5)

  • B2760

    Skin/nipple sparing mastectomy (including axillary node biopsy) - unilateral - (1-5)

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