An abnormality in your bladder has been detected or is suspected by x-ray, laboratory or endoscopic examinations. Only the microscopic examination of the removed tissue will make the exact diagnosis allowing you to offer the treatment and follow-up adapted to your situation. The absence of an accurate diagnosis and treatment puts you at risk of allowing a dangerous lesion to develop, possibly cancerous or likely to become so. The intervention proposed to you is intended to carry out the ablation or a sample of your bladder lesion and to have it analyzed under a microscope.