About BIGOSA

The Breast Interest Group of Southern Africa (BIGOSA) is advancing multi- disciplinary breast healthcare across Southern Africa.

Founded in 2011, BIGOSA is a multidisciplinary professional society dedicated to improving the quality of breast healthcare across the region. We bring together healthcare professionals involved in the diagnosis, treatment and management of breast disease, creating a shared platform for education, scientific exchange, collaboration and professional leadership. Our members include surgeons, radiologists, pathologists, oncologists, breast care nurses and allied healthcare professionals working across both the public and private sectors.

Why BIGOSA exists

Breast healthcare is inherently multidisciplinary.

Every patient benefits when healthcare professionals work together, share expertise and deliver coordinated care based on evidence and recognised standards.

While individual disciplines have long been represented through specialist societies, there has historically been no single organisation bringing the entire breast healthcare community together across Southern Africa. 

BIGOSA was established to help bridge that gap.

By creating opportunities for collaboration, education and professional leadership, the organisation supports a more connected breast healthcare community and contributes to improving standards of care throughout the region.

Our purpose

To improve the quality of breast healthcare caross Southern Africa through education, multidisciplinary collaboration, scientific exchange and professional leadership.

Our vision

To be the leading multidisciplinary professional society advancing breast healthcare across Southern Africa through education, collabaration and evidence-based practice.

How BIGOSA creates value

BIGOSA exists to strengthen the breast healthcare profession through:

Education:

Support lifelong learning through congresses, educational events and continuing professional development.

Collaboration:

Bringing together healthcare professionals across disciplines to encourage knowledge sharing and coordinated patient care.

How BIGOSA creates value

Scientific exchange:

Creating opportunities for research, discussion and the dissemination of emerging evidence.

Professional Leadership:

Supporting higher standards of breast healthcare through engagement, advocacy and multidisciplinary leadership.


Standards of Care:

Helping promote consistent, evidence-based approaches that improve patient outcomes across Southern Africa.

Our Strategic Priorities

BIGOSA is committed to:

  • Advancing multidisciplinary collaboration
  • Promoting excellence in breast healthcare
  • Supporting education and professional development
  • Encouraging research and innovation
  • Strengthening regional partnerships
  • Supporting the development of evidence

Leadership & Governance

BIGOSA is governed by a multidisciplinary Executive Committee representing the breadth of expertise required to deliver modern breast healthcare.

The Executive Committee provides strategic leadership, oversees the governance of the society and supports the delivery of its mission on behalf of the membership.

Representing expertise across surgery, radiology, pathology, oncology and allied healthcare professions, the committee reflects BIGOSA’s commitment to multidisciplinary collaboration.

Executive committee

Prof. Sheynaz Bassa

Radiation Oncologist Prof Sheynaz Bassa, MBChB, FC Rad Onc (SA) is a Radiation Oncologist and Head of the Department of Radiation Oncology at Steve Biko Academic Hospital and the University of Pretoria. She is an Adjunct Professor and clinician-scientist with a strong interest in gynaecological malignancies, breast cancer, radiotherapy innovation, and cancer care delivery in resource-constrained settings. Prof Bassa serves on several national and international academic and professional bodies, including the International Gynecologic Cancer Society (IGCS), and is actively involved in postgraduate training, curriculum development, and clinical research supervision. She has led numerous initiatives aimed at improving access to quality cancer care and advancing oncology research across Southern Africa. Additionally, she will serve as President of the College of Radiation Oncologists of South Africa in the upcoming triennium.
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Dr. Michelle Govender

Anatomical Pathologist Michelle Govender is currently an Anatomical Pathologist at Lancet Laboratories, Durban Kwa-Zulu Natal. She has worked at Lancet for the past 8 years prior to which she was a consultant at the Department of Anatomical Pathology at the NHLS, Inkosi Albert Luthuli Hospital where she also underwent her specialist training. She has a particular interest in breast pathology, in particular breast cancer, as well as soft tissue pathology. She is a current committee member of the Durban Breast Cancer Forum as well as a member of the Durban local organising committee for BIGOSA.
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Dr. Sally Anne Khosa

Anatomical Pathologist Born and raised in Giyani, Dr Khosa left home at the age of 16 to pursue her medical studies at the University of the Witwatersrand. She graduated in 2002 and following internship and community service she specialised in Anatomical Pathology at the University of Cape Town under Professor Dhiren Govender. After relocating to Johannesburg, Dr Khosa joined Lancet Laboratories in 2009, where she has played a pivotal role in the continual development and oversight of the Histopathology laboratory. Her areas of special interest include breast, hepatobiliary, and gastrointestinal pathology, fields in which she has established a reputation for clinical excellence and diagnostic precision. Beyond her professional pursuits, Dr Khosa is mother to a son and a daughter and an enthusiastic hiker with a deep appreciation for the outdoors. She enjoys exploring South Africa’s diverse landscapes as well as destinations further afield, reflecting her enduring spirit of curiosity and adventure.
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Dr. Dimitri Liakos

Plastic & Reconstructive Surgeon Dr Dimitri Liakos is plastic and reconstructive microsurgeon in Johannesburg, South Africa; with special interest in oncology reconstruction. He is currently a consultant plastic surgeon at the WITS University Donald Gordon Medical Centre. The unit specializes in reconstructive microsurgery, including head and neck reconstruction, breast reconstruction (implant based and autologous), soft tissue and bone sarcoma reconstruction (mainly in the paediatric population), perineum and genital reconstruction, facial reanimation surgery (mentored by Prof. George Psaras and visiting Prof. Ron Zuker), microsurgery for lymphoedema, abdominal wall reconstruction and lower limb reconstruction. Dr Liakos also runs a microsurgery fellowship training program to further train future microsurgeons in South Africa, and a registrar rotation as part of a broader education platform for plastic surgery training in South Africa. Dr Liakos completed his undergraduate medical degree at the University of Pretoria and his plastic surgery training at WITS University in Johannesburg.
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Prof. Francois Malherbe

Specialist General Surgeon A/Prof Francois Malherbe is a specialist general surgeon with a subspecialty focus on breast and endocrine surgery. He heads the Breast and Surgical Endocrine Unit at Groote Schuur Hospital and the University of Cape Town academic complex, where he also leads the Diagnostic Breast Clinic and the multidisciplinary breast cancer meeting. His clinical interests include the diagnosis and treatment of breast cancer, oncoplastic breast surgery, sentinel lymph node biopsy, endocrine surgery, and improving access to high-quality cancer care in the public sector. He is actively involved in undergraduate and postgraduate surgical teaching, registrar training, clinical governance, and service development. His research focuses on breast cancer care pathways, neoadjuvant endocrine therapy, surgical outcomes, and context-appropriate models of multidisciplinary cancer care in South Africa.
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Dr. Liat Malek

Diagnostic Radiologist MBChB, FC Rad (Diag) SA Dr Liat Malek is a specialist radiologist with a dedicated focus on breast imaging. She completed her medical degree at the University of Cape Town in 2005 and qualified as a radiologist in 2013. She has been part of the Breast Wellness Centre since 2014, where she combines advanced technical skill with a compassionate, patient-centered approach. Dr Malek is known for her expertise in all aspects of breast imaging. She has completed advanced training with global leaders in breast imaging and continues to stay at the forefront of the field through ongoing education and international collaboration. Recognised for her skill in breast interventions, Dr Malek is regularly invited to train other medical professionals and has presented at numerous national congresses. She has also contributed as an expert panellist in various academic and clinical forums. She is one of the founders and chairs of one of Johannesburg’s largest breast multidisciplinary teams (MDTs), bringing together specialists to ensure patients receive comprehensive, coordinated care – a cornerstone of effective breast cancer management. Dr Malek is meticulous, thoughtful, and deeply committed to her patients’ well-being, offering expertise grounded in both scientific excellence and genuine compassion. Outside of her medical career, Dr. Malek is a devoted wife and mother to three children and four beloved fur babies. She has a profound appreciation for animals and nature, and often reflects that, if not in medicine, she would pursue a career working with animals. Her deep empathy and nurturing spirit extend beyond her practice, shaping the way she connects with both her patients and the world around her.
Read more

Dr. Maitazvenyu Zuva Mvere

Consultant Radiologist Dr Maitazvenyu Zuva Mvere is a consultant radiologist with subspecialist expertise in breast and oncologic imaging. She is the Managing Radiologist at MIC Radiology Group in Zimbabwe, where she provides clinical leadership and supports the delivery of high-quality, patient-centred radiology services. She previously served as Consultant Radiologist and Clinical Director at the Well Woman Clinic from 2013 to 2022, where she played a key role in the development of breast imaging and women’s imaging services and formation of the country’s first dedicated breast cancer multi-disciplinary group. Dr Mvere obtained her MBChB from the University of Zimbabwe and went on to complete postgraduate medical training in the United Kingdom. She trained in paediatrics within the East Anglia Training Scheme, worked as a Junior House Officer in the Oxford Hospitals NHS Trust, and served as a Research Fellow in HIV Medicine at King’s College Hospital, London. She later completed radiology training through the Leeds Radiology Academy and Nottingham Training Scheme, and in 2010 was awarded the Fellowship of the Royal College of Radiologists (UK). She subsequently undertook a Breast Imaging Fellowship at the Nottingham Breast Institute from 2011 to 2013. Her academic and professional development has remained strongly focused on oncologic and breast imaging. In 2023, she was awarded the European Board of Breast Imaging Diploma, and in 2025 she completed a Master in Oncologic Imaging through the University of Pisa in collaboration with the European Society of Oncologic Imaging (ESOI). Dr Mvere has contributed to both research and scientific education through peer-reviewed publications and conference presentations, particularly in breast cancer imaging and multidisciplinary care. Her work has included publications in Clinical Oncology and Breast Cancer Research, as well as presentations at the SA Imaging Congress and the Zimbabwe Medical Association Annual Scientific Congress. Her academic interests include breast cancer staging, screening performance, ultrasound assessment, and the impact of radiology review on multidisciplinary treatment planning. She has demonstrated a strong commitment to advancing the radiology profession both locally and regionally. She is actively involved in shaping policy and professional standards through her leadership roles within the Association of Radiologists and Radiation Oncologists of Zimbabwe (ARROZ), where she serves as Chair of the Tariff Committee and Chair of the Image Practice Committee. In these roles, she has contributed to important discussions on the sustainability of radiology services, fair remuneration structures, and evolving scope of practice considerations within imaging. Dr Mvere is also a co-founder of the Africa Breast Imaging Network, a social media platform established to connect breast imagers across the African continent and promote collaboration, shared learning, and professional development in breast imaging. She is a member of the Radiological Society of South Africa (RSSA), the European Society of Breast Imaging (EUSOBI), and the Society of Breast Imaging (SBI). She also serves as ARROZ Representative to the Council of Affiliated Associations of Zimbabwe, is an Executive Committee Member of the Breast Interest Group of Southern Africa (BIGOSA) and is the Founder and First President of the Zimbabwe Women Doctors Association(ZWDA).
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Dr. Carla Norval

Plastic SurgeonAfter completing her undergraduate studies at Stellenbosch University, Dr Norval spent four years in the UK where she completed her surgical rotation. She became a fellow of the Royal College of Surgeons of England in 1996. After specializing at Wits University, she qualified as a consultant plastic surgeon in 2001. She spent 6 years heading the plastic surgery unit at Helen Joseph where she played an instrumental part in establishing the first oncoplastic breast unit in the state sector in Gauteng. Carla is passionate about breast reconstructive surgery as she finds her work hugely rewarding.
Read more

Dr. Keo Tabane

Medical Oncologist Dr Keo Tabane is a medical oncologist practicing at Sandton Oncology in Johannesburg. She obtained her MBChB degree from Medunsa with distinctions in Obstetrics, Gynaecology and Family Medicine. In 1994. She attained Fellowship of the College of Physicians of South Africa in 2005, and worked as a fellow in the department of medical oncology CMJAH until 2008, When she qualified as a medical oncologist .She joined Sandton Oncology in 2008, where she is Director . She has participated in numerous collaborative international randomized trials, and is a past executive committee member of the South African Society of Medical Oncologists (SASMO). She is also an executive committee member of BIGOSA( Breast Interest Group of SA),and co-chairperson of the local organising committee for the upcoming BIGOSA conference(2026) Her main areas of interest are breast and gynaecological cancer, as well as the treatment of various cancers with immunotherapy and antibody drug conjugates. She is currently a Principal Investigator and/or Sub-investigator of a number of clinical trials in the areas of breast and lung cancer, exploiting immunotherapy and antibody drug conjugates. She is also a firm believer in shared decision making, and of patients advocating for their own health care journeys.
Read more

Dr. Ronwyn van Eeden

Specialist Physician and Medical Oncologist Dr. Ronwyn van Eeden is a Medical Oncologist in Rosebank, Johannesburg. She is also a previous honorary consultant in Medical Oncology at the Chris Hani Academic hospital. She currently serves on the editorial board for the Journal of thoracic oncology and is on the executive committee for BIGOSA and COSOSA. Dr. van Eeden has a special interest in breast and lung cancer as well as immuno-oncology and precision medicine.
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Constitution

BIGOSA operates under a formal constitution that guides the governance, membership and operation of the society.

The constitution reflects the organisation’s commitment to transparency, accountability and professional integrity.

Working together

Improving breast healthcare requires more than individual expertise.

It requires strong professional networks, shared learning and a commitment to continual improvement.

BIGOSA exists to bring that community together and support the advancement of breast healthcare across Southern Africa.

Dr. Sarah Nietz

PRESIDENT - ELECT
Breast Surgeon

Dr Sarah Nietz is a breast surgeon, health systems researcher and President-Elect of the Breast Interest Group of Southern Africa (BIGOSA). She serves as Academic Lead of the BIGOSA Breast Centres Initiative, a national programme establishing South Africa’s first network of breast centres with a focus on quality improvement, benchmarking and equitable access to high-quality breast cancer care.

 

She completed her PhD on the quality of breast cancer care in South Africa, demonstrating the relationship between adherence to evidence-based quality indicators and patient outcomes. Her research focuses on translating evidence into practice through implementation science, learning health systems and measurable quality improvement.

 

Sarah is passionate about making breast cancer care more consistent, equitable and patient-centred, ensuring that every woman in South Africa has access to high-quality care regardless of where she lives or receives treatment. Through BIGOSA, she is working to build sustainable systems that improve outcomes and strengthen breast cancer services across the country.

Prof. Duvern Ramiah

PRESIDENT
MBBCh (Wits), FCRadOnc (SA), MBA with distinction (London Business School)

Prof. Duvern Ramiah is Head of the Division of Radiation Oncology at the University of the Witwatersrand and Charlotte Maxeke Johannesburg Academic Hospital (CMJAH). He also leads a private radiation oncology practice in Dunkeld West, Johannesburg.

Prof. Ramiah pioneered one of South Africa’s first public-sector prostate brachytherapy programmes. His work in developing innovative prostate cancer and breast cancer treatment pathways has contributed significantly to reducing waiting times for treatment in the public health sector and has received national recognition, including awards from the Centre for Public Service Innovation and the Government Employees Medical Scheme.

His academic and clinical interests focus on improving access to cancer care in low- and middle-income countries through disruptive innovation. He has led initiatives in hypofractionated radiotherapy, stereotactic body radiotherapy (SBRT), artificial intelligence-assisted treatment planning, and remote radiotherapy planning systems aimed at expanding access to high-quality cancer treatment for underserved populations. He has authored and co-authored numerous publications in local and international journals.

Prof. Ramiah was appointed by the health minister to serve on South Africa’s Ministerial Advisory Committee for the Prevention and Control of Cancer, where he contributes to national cancer policy and strategy. Internationally, he serves on the International Committee of the American Society for Radiation Oncology (ASTRO) and was appointed one of ASTRO’s inaugural Global Ambassadors. He is a member of the Executive Committee of the South African Society of Clinical and Radiation Oncologists (SASCRO), and serves on the Editorial Board of the South African Journal of Oncology. He was also a visiting professor at the University of Pennsylvania, USA and has chaired and spoken at numerous international oncology conferences, such as the ASTRO annual conference and ESMO Africa.

An active educator and examiner, Prof. Ramiah has held numerous leadership roles within the Colleges of Medicine of South Africa, including convenor, moderator, and examiner for the Fellowship of Radiation Oncology examinations. He remains passionate about ensuring that advances in cancer care are translated into meaningful improvements in outcomes for patients across Africa.

Prof. Shynaz Bassa

MBChB, FC Rad Onc (SA)

Prof Sheynaz Bassa, MBChB, FC Rad Onc (SA) is a Radiation Oncologist and Head of the Department of Radiation Oncology at Steve Biko Academic Hospital and the University of Pretoria. She is an Adjunct Professor and clinician-scientist with a strong interest in gynaecological malignancies, breast cancer, radiotherapy innovation, and cancer care delivery in resource-constrained settings.

 Prof Bassa serves on several national and international academic and professional bodies, including the International Gynecologic Cancer Society (IGCS), and is actively involved in postgraduate training, curriculum development, and clinical research supervision. She has led numerous initiatives aimed at improving access to quality cancer care and advancing oncology research across Southern Africa. Additionally, she will serve as President of the College of Radiation Oncologists of South Africa in the upcoming triennium. 

Dr. Michelle Govender

Anatomical Pathologist

Michelle Govender is currently an Anatomical Pathologist at Lancet Laboratories, Durban Kwa-Zulu Natal.   She has worked at Lancet for the past 8 years prior to which she was a consultant at the Department of Anatomical Pathology at the NHLS, Inkosi Albert Luthuli Hospital where she also underwent her specialist training.  She has a particular interest in breast pathology, in particular breast cancer, as well as soft tissue pathology. 

She is a current committee member of the Durban Breast Cancer Forum as well as a member of the Durban local organising committee for BIGOSA.

Dr Sally Anne Khosa

Anatomical Pathologist

Michelle Govender is currently an Anatomical Pathologist at Lancet Laboratories, Durban Kwa-Zulu Natal.   She has worked at Lancet for the past 8 years prior to which she was a consultant at the Department of Anatomical Pathology at the NHLS, Inkosi Albert Luthuli Hospital where she also underwent her specialist training. 

She has a particular interest in breast pathology, in particular breast cancer, as well as soft tissue pathology.  She is a current committee member of the Durban Breast Cancer Forum as well as a member of the Durban local organising committee for BIGOSA.

Dr. D Liakos

BSc (Micro); MBChB (UP); FC Plast Surg (SA); MMed (Plastic & Reconstructive Surgery) Wits

Dr Dimitri Liakos is plastic and reconstructive microsurgeon in Johannesburg, South Africa; with special interest in oncology reconstruction.
He is currently a consultant plastic surgeon at the WITS University Donald Gordon Medical Centre.
The unit specializes in reconstructive microsurgery, including head and neck reconstruction, breast reconstruction (implant based and autologous), soft tissue and bone sarcoma reconstruction (mainly in the paediatric population), perineum and genital reconstruction, facial reanimation surgery (mentored by Prof. George Psaras and visiting Prof. Ron Zuker), microsurgery for lymphoedema, abdominal wall reconstruction and lower limb reconstruction.
Dr Liakos also runs a microsurgery fellowship training program to further train future microsurgeons in South Africa, and a registrar rotation as part of a broader education platform for plastic surgery training in South Africa.
Dr Liakos completed his undergraduate medical degree at the University of Pretoria and his plastic surgery training at WITS University in Johannesburg.

He then went on to complete a fellowship in advanced reconstructive microsurgery in Taiwan, and with Prof M Hamdi at UZ Brussels in Belgium.
Furthermore, Dr Liakos has completed an observership at the MD Anderson Cancer Centre in Houston, Texas with Prof Hanasono.
Dr Liakos sits on the executive board of the Association of Plastic, Reconstructive and Aesthetic Surgeons of South Africa (APRASSA); the executive board of the South African Head and Neck Society (SAHNOS); the executive board of the Breast Interest Group of South Africa (BIGOSA); and is a member of the World Society of Reconstructive microsurgery.

Prof. Francois Malherbe

Specialist General Surgeon

A/Prof Francois Malherbe is a specialist general surgeon with a subspecialty focus on breast and endocrine surgery. He heads the Breast and Surgical Endocrine Unit at Groote Schuur Hospital and the University of Cape Town academic complex, where he also leads the Diagnostic Breast Clinic and the multidisciplinary breast cancer meeting. His clinical interests include the diagnosis and treatment of breast cancer, oncoplastic breast surgery, sentinel lymph node biopsy, endocrine surgery, and improving access to high-quality cancer care in the public sector. He is actively involved in undergraduate and postgraduate surgical teaching, registrar training, clinical governance, and service development.

His research focuses on breast cancer care pathways, neoadjuvant endocrine therapy, surgical outcomes, and context-appropriate models of multidisciplinary cancer care in South Africa.

Dr. Liat Malek

Diagnostic Radiologist
MBChB, FC Rad (Diag) SA

Dr Liat Malek is a specialist radiologist with a dedicated focus on breast imaging. She completed her medical degree at the University of Cape Town in 2005 and qualified as a radiologist in 2013. She has been part of the Breast Wellness Centre since 2014, where she combines advanced technical skill with a compassionate, patient-centered approach.

Dr Malek is known for her expertise in all aspects of breast imaging. She has completed advanced training with global leaders in breast imaging and continues to stay at the forefront of the field through ongoing education and international collaboration.

Recognised for her skill in breast interventions, Dr Malek is regularly invited to train other medical professionals and has presented at numerous national congresses. She has also contributed as an expert panellist in various academic and clinical forums.

She is one of the founders and chairs of one of Johannesburg’s largest breast multidisciplinary teams (MDTs), bringing together specialists to ensure patients receive comprehensive, coordinated care – a cornerstone of effective breast cancer management.

Dr Malek is meticulous, thoughtful, and deeply committed to her patients’ well-being, offering expertise grounded in both scientific excellence and genuine compassion.

Outside of her medical career, Dr. Malek is a devoted wife and mother to three children and four beloved fur babies. She has a profound appreciation for animals and nature, and often reflects that, if not in medicine, she would pursue a career working with animals. Her deep empathy and nurturing spirit extend beyond her practice, shaping the way she connects with both her patients and the world around her.

Dr. Maitazvenyu Zuva Mvere

MBChB, FRCR (UK), EBBI

Dr Maitazvenyu Zuva Mvere is a consultant radiologist with subspecialist expertise in breast and oncologic imaging. She is the Managing Radiologist at MIC Radiology Group in Zimbabwe, where she provides clinical leadership and supports the delivery of high-quality, patient-centred radiology services. She previously served as Consultant Radiologist and Clinical Director at the Well Woman Clinic from 2013 to 2022, where she played a key role in the development of breast imaging and women’s imaging services and formation of the country’s first dedicated breast cancer multi-disciplinary group.

Dr Mvere obtained her MBChB from the University of Zimbabwe and went on to complete postgraduate medical training in the United Kingdom. She trained in paediatrics within the East Anglia Training Scheme, worked as a Junior House Officer in the Oxford Hospitals NHS Trust, and served as a Research Fellow in HIV Medicine at King’s College Hospital, London. She later completed radiology training through the Leeds Radiology Academy and Nottingham Training Scheme, and in 2010 was awarded the Fellowship of the Royal College of Radiologists (UK). She subsequently undertook a Breast Imaging Fellowship at the Nottingham Breast Institute from 2011 to 2013.

Her academic and professional development has remained strongly focused on oncologic and breast imaging. In 2023, she was awarded the European Board of Breast Imaging Diploma, and in 2025 she completed a Master in Oncologic Imaging through the University of Pisa in collaboration with the European Society of Oncologic Imaging (ESOI).

Dr Mvere has contributed to both research and scientific education through peer-reviewed publications and conference presentations, particularly in breast cancer imaging and multidisciplinary care. Her work has included publications in Clinical Oncology and Breast Cancer Research, as well as presentations at the SA Imaging Congress and the Zimbabwe Medical Association Annual Scientific Congress. Her academic interests include breast cancer staging, screening performance, ultrasound assessment, and the impact of radiology review on multidisciplinary treatment planning.

She has demonstrated a strong commitment to advancing the radiology profession both locally and regionally. She is actively involved in shaping policy and professional standards through her leadership roles within the Association of Radiologists and Radiation Oncologists of Zimbabwe (ARROZ), where she serves as Chair of the Tariff Committee and Chair of the Image Practice Committee. In these roles, she has contributed to important discussions on the sustainability of radiology services, fair remuneration structures, and evolving scope of practice considerations within imaging.

Dr Mvere is also a co-founder of the Africa Breast Imaging Network, a social media platform established to connect breast imagers across the African continent and promote collaboration, shared learning, and professional development in breast imaging.

She is a member of the Radiological Society of South Africa (RSSA), the European Society of Breast Imaging (EUSOBI), and the Society of Breast Imaging (SBI). She also serves as ARROZ Representative to the Council of Affiliated Associations of Zimbabwe, is an Executive Committee Member of the Breast Interest Group of Southern Africa (BIGOSA) and is the Founder and First President of the Zimbabwe Women Doctors Association(ZWDA).

Dr. Carla Norval

Plastic Surgeon

After completing her undergraduate studies at Stellenbosch University, Dr Norval spent four years in the UK where she completed her surgical rotation. She became a fellow of the Royal College of Surgeons of England in 1996.
After specializing at Wits University, she qualified as a consultant plastic surgeon in 2001. She spent 6 years heading the plastic surgery unit at Helen Joseph where she played an instrumental part in establishing the first oncoplastic breast unit in the state sector in Gauteng.

Carla is passionate about breast reconstructive surgery as she finds her work hugely rewarding.

Dr. Keo Tabane

Medical Oncologist

Dr Keo Tabane is a medical oncologist practicing at Sandton Oncology in Johannesburg. She obtained her MBChB degree from Medunsa with distinctions in Obstetrics, Gynaecology and Family Medicine. In 1994.

She attained Fellowship of the College of Physicians of South Africa in 2005, and worked as a fellow in the department of medical oncology CMJAH until 2008, When she qualified as a medical oncologist .She joined Sandton Oncology in 2008, where she is Director .

She has participated in numerous collaborative international randomized trials, and is a past  executive committee member of the South African Society of Medical Oncologists (SASMO). She is also an executive committee member of BIGOSA( Breast Interest Group of SA),and co-chairperson of the local organising committee for the upcoming BIGOSA conference(2026)

Her main areas of interest are breast and gynaecological  cancer, as well as the treatment of various cancers with immunotherapy and antibody drug conjugates. She is currently a Principal Investigator  and/or Sub-investigator of a number of clinical trials in the areas of breast and lung cancer, exploiting immunotherapy and antibody drug conjugates. She is also a firm believer in shared decision making, and  of  patients advocating for their own health care journeys.

Dr. Ronwyn van Eeden

Specialist Physician and Medical Oncologist
MBChB (UP), FCP(SA), Cert Med Onc(SA)

Dr. Ronwyn van Eeden is a Medical Oncologist in Rosebank, Johannesburg. She is also a previous honorary consultant in Medical Oncology at the Chris Hani Academic hospital. She currently serves on the editorial board for the Journal of thoracic oncology and is on the executive committee for BIGOSA and COSOSA.

Dr. van Eeden has a special interest in breast and lung cancer as well as immuno-oncology and precision medicine.

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