The online petition has continued to gather support from across the UK, now surpassing 60,000 signatures. Chloe believes a mandatory second review of benign scan results could help identify missed cancers earlier and ultimately save lives. Those wishing to support the campaign can add their name through the Louise's Law petition on Change.org. What is Louise's Law? Louise's Law is a proposed change in the law that would guarantee a patient's right to a second opinion after a tumour is diagnosed as benign.