Evaluation of the Efficacy of HIFU Treatment on Rectal Endometriosis Symptoms.

Prior treatment

• Patient with an implant located less than 1 cm from the treatment area,
• Patient who has already received HIFU treatment for a rectal endometriotic lesion,

Other illness

• Ongoing urogenital infection,
• History of segmental rectal resection or discoid resection,
• Inflammatory disease of the colon,
• Allergy to latex,

Other

• Anorectal anatomy incompatible with HIFU treatment,
• Overall pain level considered intolerable by the patient and making a potential 3-months delay management impossible,
• No scheduled endometriosis procedures during study follow-up,
• Treatment of endometriosis in the context of pregnancy desire for which a 3-month delay is not appropriate
• Patient with contraindications to MRI,
• Patient who does not speak or read French,
• Patient deprived of liberty following a judicial or administrative decision,
• Patient in labor or nursing,
• Patient under guardianship or curatorship

• Patient 18 years of age or older,
• Rectal endometriosis on preoperative imaging with no other digestive location,
• Symptomatic patient (Acute pelvic pain \> 3), in failure of drug treatment,
• Endometriotic lesion visible on ultrasound and confirmed on MRI,
• Centralized MRI, reviewed and validated by the MRI review committee,
• No current pregnancy and no pregnancy plan during the study period,
• Patient agreeing not to change her hormonal treatment throughout the study period,
• Patient accepting the constraints of follow-up defined in the framework of the study,
• Patient affiliated to French health insurance.