OP34.02: Use of extended transvaginal ultrasound in deep endometriosis in patients with clinic suspect of DIE

To assess the diagnostic performance of extended transvaginal ultrasound (EXTU) for diagnosing deep infiltrating endometriosis (DIE). Furthermore describe the use of high sliding sign for predict obliteration of pelvis and fixed ovaries. Prospective study comprising women (Patients' mean age: years SD: range 21 to 45 years old) with suspected DIE based on clinical complaints. All women underwent EXTU. The sliding sing for detecting Douglas' pouch obliteration (low sliding sign) and fixation of fundus of uterus (High sliding sign) was assessed. Also the mobility of ovaries was determinated in all patients. The patients received bowel preparation prior to ultrasound examination and acoustic windom with gel intravaginal (50 cc) during the exam. All women underwent laparoscopic surgery and histologic confirmation of endometriosis was done. Sensitivity, specificity and Kappa Index was calculated. 347 DIE lesions histologically confirmed (rectosigmoid, n = 86; vagina, n = 45; retrocervical, n = 169; bladder, n = 25; ureter, n = 8; other sites, n = 14). High Sliding Sign: Sensitivity: 89,1 %; Specificity: 97,6%, for obliteration of Pelvis. Low Sliding Sign: Sensitivity: 99,1 %, Specificity: 91,3 % for obliteration of Douglas Pouch. Fixed right ovary: Sensitivity: 81,2 %, Specificity: 87,6%. Fixed Left Ovary: Sensitivity: 73,1%, Specificity: 91,4 %. EXTU has a good diagnostic performance for DIE. Furthermore the High Sliding sign is a useful ultrasound sign in patients with suspected of deep infiltrating endometriosis.