Siân Allen is a full-time Consultant Urological Surgeon. In addition to her broad background in general urology, Siân has developed a subspecialty in EndoUrology and Stone disease, treating complex cases from across the UK. As well as performing minimally invasive surgery to remove kidney and bladder stones, she treats patients with obstructed kidneys from a variety of causes including malignancy, gynaecological disease, and radiotherapy.