GMC Number: 6130706

Year of first qualification: 1999, Semmelweis University, Budapest, Hungary

Specialty: Histopathology / Cellular Pathology

Clinical interest: Breast, skin, soft tissues

Secretary: Alison Johnson

Telephone: 0117 414 9830

Dr Demetris Poyiatzis obtained his medical degree at Semmelweis University, Budapest, Hungary in 1999. Following graduation he decided to pursue a career in pathology. During his residency years, he developed a special interest in tumour pathology and was actively involved in this area at the National Institute of Oncology in Budapest, Hungary.

During Dr Poyiatzis's training in the UK as a Specialist Registrar in Histopathology he was mainly based at Southmead Hospital Bristol but the post involved rotations in both Teaching and District General Hospitals which included Bristol Royal Infirmary, Musgrove Park Hospital, Taunton, and Weston General Hospital. He successfully completed both the FRCPath part 1 and FRCPath part 2 examinations.

He currently works as a Histopathology consultant at Southmead Hospital Bristol and has developed special interest in Breast, Soft Tissue, and Skin pathology. He also reports breast cytology. He participates in general and specialist EQA schemes and also participates in audit work.

At the Bristol Urological Institute (BUI), we are proud to lead a dynamic and inclusive research programme that spans the full spectrum of urological science—from laboratory-based discovery to cutting-edge clinical trials, artificial intelligence, and genomics. This broad portfolio enables us to offer our patients access to the most advanced diagnostics and treatments available today.

World-Class Expertise

Our clinicians are internationally recognised experts in their fields, contributing to global advances in urological care. From improving quality of life in Functional Urology to pioneering new treatments in Urological Cancers, our research is making a real difference.

Inclusive, Impactful Research

Our research is designed to benefit everyone. We actively include people of all genders, ethnicities, and socioeconomic backgrounds, ensuring our studies reflect the diversity of the communities we serve. Whether we’re leading national studies or collaborating with global partners, our goal is to answer the most important questions in urology and shape the future of care.

Patient Involvement

Patients are central to everything we do. We offer Patient and Public Involvement and Engagement (PPIE) opportunities for those who want to help shape research and improve outcomes for others. Your voice matters—and it helps us do better science.

Research in Functional Urology

Functional Urology includes very common conditions like urinary incontinence, overactive bladder and benign (non-cancer) prostate disease.

The Bristol Urological Institute is involved in research that is trying to understand how we can improve the quality of life of men and women who suffer from these conditions. The research spans from laboratory research to try to understand exactly how the brain controls the bladder through new questionnaires and what are the best tests to use for diagnosis, to what is the best operation for incontinence in men. Some of our research funding comes from the National Institute for Health Research (NIHR)-Health Technology Assessment (HTA) program.

Research in Urology Cancers

The BUI is the busiest urology cancer centre in the country. We are centre of excellence for robotic and open surgery for the treatment of prostate, bladder, renal, testicular and penile cancer.  However, research is an essential part of our work so that advances can be made that bring our patients better outcomes from their disease.

We strive to ensure that our research projects address important questions  which exist concerning all aspects of the treatment of patients with these cancers. We are involved in basic science research with our colleagues in both University of Bristol and the University of the West of England.

To see more details about our current research opportunities, please visit: Urology Current Research | North Bristol NHS Trust

31st Annual Scientific Meeting 4 & 5 December 2025

NMIBC - The Year of the Bladder - why NMIBC is having a moment

Meeting Chair: John McGrath

Invited Professors: 

Professor Matthew Nielson, USA
 

Visiting Professorial Day - Thursday 4 December
Venue:  Southmead Hospital

Annual Scientific Meeting - Friday 5 December
Venue: Aerospace Museum

2026 Date to be confirmed

This is a 1-day online course aimed at Healthcare Professionals who are already proficient in urodynamic studies.

The course looks at the role of urodynamics (UDS) in more complex patients including those who present diagnostic and management challenges.

Intended delegates:  doctors, nurses, technicians and/or allied health-care professionals (AHPs) with extensive urodynamic experience. Delegates will be asked to submit their own “problem cases” for discussion.

Learning Points:

• detailed knowledge of the physical principles behind UDS measurement
• knowledge of the indications for specialist urodynamics, including urethral function studies, video-UDS and ambulatory monitoring
• ability to interpret complex urodynamic traces
• ability to recognise difficult artefacts seen during UDS, and the knowledge of how to correct them
• exploration of the benefits of UDS in managing difficult LUT problems in children, women, men and neurological patients by case-based discussions

Course Director: Professor Hashim Hashim
 

Fees: TBC

please contact buicourses@nbt.nhs.uk

Certificate in Urodynamics Course 

Upcoming courses:

10 & 11th November - Virtual Course  - FULLY BOOKED
19th & 20th January 2026. F2F in Bristol - FULLY BOOKED
2 & 3 March 2026 - Virtual Course - bookings now being taken - see below
9 - 10 March 2026 - F2F London Course. Guys & St Thomas's. Bookings being taken - please see below
 

About the course

The Certificate in Urodynamics course fulfils part of the requirements for completion of urodynamic training programme recognised by the International Continence Society. Course attendees will receive a Certificate of Attendance if they attend the whole course. The Certificate can also be used for CME/CPD credits (if applicable). It is mandatory that delegates attend the whole course in order to receive a Certificate of Attendance.

Intended delegates

• Doctors, nurses, technicians and anyone allied to urodynamics who have some urodynamic experience.

PLEASE NOTE - this course is NOT suitable for those who have no urodynamic knowledge or little or no experience. 

Learning points

• Appreciation of the philosophy behind urodynamic studies (UDS) as part of patient investigation
• Knowledge of the basic physical principles behind the measurement of flow and pressure
• Knowledge of the role of UDS in investigating children, women, men and neurological patients
• Ability to recognise artefacts seen during UDS, and the knowledge of how to correct them
• Ability to interpret urodynamic traces
• Knowledge of the techniques of basic and specialist urodynamics, including urethral function and video-UDS 

The quiz

At the end of the course there is an optional multiple choice quiz and we encourage all attendees to undertake this. If a delegate passes the quiz then they will get a Certificate of Passing – the pass mark for the quiz is 80%. If a delegate does not pass the quiz then they will have an option to retake the course within a year, but not earlier than three months, at any of the other BUI Certificate in Urodynamics courses held throughout the year. Full attendance at another course is required and the fees paid in full. 

Passing the quiz is seen as a distinctive measure of quality and reflects the high standards maintained during the course in teaching and establishing Good Urodynamics Practice and is regarded as the first step in gaining competency in urodynamics. Course attendance and passing the quiz is not enough to confer competence so additional training support will need to be provided by regular attendance at urodynamic clinics and competency assessment both informally at these clinics and formally with directly observed procedures and case-based discussions.

Course Director: Prof Hashim Hashim

Fees: £595 virtual, £625 Face to Face.

Places can be booked via our online booking system. Please select the course you wish to attend:

To book the Virtual course in March 2026 please go to: Medtribe online booking March 2026 
To book the London F2F course in March 2026 please go to: Medtribe Booking London 2026

For more information please contact buicourses@nbt.nhs.uk 

24 & 25th March 2026

About the course

This is a two day Basic UDS course run at the Watershed Conference Centre in the centre of Bristol. The dates are 24 & 25th March 2026

The course covers the theory of urodynamics and offers some hands on sessions with urodynamic equipment and the urodynamic staff.  

Intended delegates: doctors, nurses, technicians and/or anyone allied to urodynamics who have little or no urodynamic experience.

Learning points

• appreciation of the philosophy behind urodynamic studies (UDS) as part of patient investigation
• basic knowledge of the principles behind the measurement of urine flow and pressure
• basic knowledge of the techniques of flow and pressure measurement
• ability to interpret straightforward urodynamic traces
• appreciation of the artefacts seen during UDS
• basic ability to operate urodynamic equipment

Course Director: Professor Paul Abrams

Cost: £520

Online Booking available here Basic UDS Course online booking

For further information contact buicourses@nbt.nhs.uk

Lithotripsy

There are now many methods of treating stones in the kidney or ureter. Lithotripsy is one method.

Stones can be broken up by focusing pressure waves onto them from a lithotriptor – this is known as "Shock Wave Lithotripsy" – SWL for short.

A lithotriptor is a machine which has the ability to visualise stones either by x-ray or ultrasound.

The energy waves produced by the machine are accurately focused on the stone and travel through the body tissues without damaging them, the energy is dispersed to break up the stone usually reducing it to ‘sand’ or ‘gravel’ – which is then passed in the urine with little or no pain.

The majority of patients are treated as day cases, spending 2-4 hours in the unit.

The Bristol Urological Institute
North Bristol NHS Trust
Southmead Hospital
Southmead Road
Westbury-on-Trym
Bristol
BS10 5NB

Urology Outpatients
Gate 36, Level 1, Brunel building, Southmead Hospital
Telephone: 0117 41360 / 41361
Lithotripsy telephone: 0117 4141718

Urology Inpatients
Gate 33b - Urology
Telephone Number 01174142631 / 01174142630

Elective Theatres
Gate 21 Level 3, Brunel building, Southmead Hospital
Telephone: 0117 4140300 or 0117 4140344

Urodynamics
Gate 36, Level 1, Brunel building, Southmead Hospital
Telephone: 0117 4141220

Urology Administration Office
Support Managers:
Tel 0117 4140898

Research & Education

BUI Teaching and Research. Admin Office telephone: 0117 4147934

Education Lead
Ayo Kalejaiye
Email: odunayo.kalejaiye@nbt.nhs.uk

Education and Research Administration 
Scott Howse
Email: scott.howse@nbt.nhs.uk
 

The Bristol Urological Institute (BUI) was established in 1993 as a charity to promote research into urological diseases and to provide high quality undergraduate and post graduate teaching.

In 2010 the Bristol Urological Institute was incorporated into North Bristol NHS Trust, Southmead Hospital, Bristol.

The Bristol Urological Institute (BUI) now offers a complete clinical service to patients with urological problems and provides teaching and research.

The BUI intends to remain a patient focused organisation providing the best care to patients with urological conditions, and by working with them, to teach healthcare professionals about urology and to build on its research successes over the last 25 years.

Bristol Urological Institute – promoting urology through research, teaching and premier patient care.

Clinical trials are research studies that look at new ways of delivering medical care and test new drugs or combinations of drugs in patients.

Clinical trials in cancer care is extremely important as a means of exploring and deciding on the most effective and efficient means of treating and diagnosing cancer.

The clinical trials team at North Bristol NHS Trust co-ordinates and support the delivery of clinical trials across a variety of cancers including:

• Haematology
• Urology
• Brain
• Head and Neck
• Upper Gastro Intestinal
• Colorectal
• Breast
• Lung
• Skin

If you are eligible for a study that we are running at North Bristol NHS Trust, a member of the clinical trials team will discuss the study with you in detail.

Participation in clinical trials is voluntary and if you decide not to participate, this will not influence your treatment in any way.