Table II.

Investigation structure of this review.

P.I.C.O. Structured Investigation Question
P (Patient/Problem)	Patients undergoing imaging studies for deep endometriosis diagnosis
I (Intervention)	Mapping for deep endometriosis by ultrasound (abdominal and transvaginal) with/without bowel preparation, MRI (pelvic and abdominal) with/without bowel preparation for diagnosis of deep endometriosis lesions.
C (Comparison)	No comparison
O (Outcome)	Diagnostic accuracy of MRI and ultrasound, describe the main indirect and atypical signals of endometriosis for each pelvic compartment and pelvic adhesions