Kay Thomas

Kay Thomas

Consultant urological surgeon and deputy medical director


Kay Thomas MBBS MD FRCS (Urol) was appointed as a consultant at Guy's and St Thomas' in 2006.

Her principal subspecialist interest is in endourology and stone disease. She:

  • has established a unique multidisciplinary clinic for the management of cystinuria
  • performs percutaneous and uretero-renoscopic surgery for stones throughout the urinary tract, using laser and ultrasonic lithotripsy
  • supervises Extracorporeal Shock Wave Lithotripsy (ESWL) within the Stone Unit at Guy's
  • trained in ultrasound and performs her own scans

Kay is an expert in the endoscopic management of bladder cancer. She:

  • co-investigator for the 'blue light' photodynamic diagnosis of new bladder tumours
  • performs flexible uretero-renoscopy for the surveillance and treatment of tumours involving the upper urinary tract.
  • introduced endoscopic laser ablation of bladder tumours under local anaesthetic

Kay Thomas is the deputy medical director for the transplant, renal and urology directorate.

Education and training

Charing Cross and Westminster, University of London 1994.

Research interests

  • New methods of managing and preventing cystine stones
  • Passive acoustic sensor (stone stethoscope) a novel sensor whih may be able to detect which stones respond to lithotripsy
  • Defining outcome measures for stone surgery
  • 'Blue light' photodynamic cystoscopy for new bladder tumours
  • Improving treatment of bladder cancer by developing new techniques and equipment

Last updated: April 2022

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