Indication for hysteroscopic guided biopsy compared to blind biopsy have been little evaluated. However, this kind of biopsy is usually performed in many centre. They allow exploration of uterine cavity but also to perform guided biopsies on the most suspicious area. However, with 5Fr forceps, biopsy are often too small to conclude.

Blind biopsies using Novak or Cormier cannula had limits. Demirkiran et al conclude on 673 women that histology was similar between biopsies and hysterectomy in only 67% of cases. Others studies conclude thatit is difficult to conclude about focal disease with blind biopsies.

A study compared blind biopsies to biopsy performed under hysteroscopic guidance in women using Tamoxifene and conclude that guided biopsies were more specific (80% versus 68.9%) and a better positive predictive value (68.9% versus 43.7%) for all kind of endometrial pathologies

Inclusion Criteria:

• • Woman over 18 year-old with abnormal uterine bleeding (or endometrium thickness over 10mm) and risk factors of endometrial carcinoma, or endometrium thickness over 5mm in a menopausal woman or abnormal uterine bleeding after 45 years old.

  • Woman who speak and understand french
  • Woman who give her written informed consent
  • Woman covered by french medical insurance

Exclusion Criteria:

• • Pregnant or breastfeeding patient

  • Patient under guardianship, curators or safeguard of justice.
  • Patient participating in another ongoing study.