This information has been developed by the RCOG Patient Information Committee and the British Society for Gynaecological Endoscopy (BSGE) Hysteroscopy Subcommittee. It is based on the RCOG/BSGE Green-top Guideline No. 59, Best Practice in Outpatient Hysteroscopy, published in March 2011. The guideline contains a full list of the sources of evidence we have used. You can find it online at: www.rcog.org.uk/en/guidelinesresearch-services/guidelines/gtg59. This information has been reviewed before publication by women attending clinics in Wrexham, London, Sheffield and Stockport, by the RCOG Women’s Network and by the RCOG Women’s Voices Involvement Panel.