Objective: To assess the accuracy of transvaginal sonography (TVS) in defining size and location of deep infiltrating endometriosis (DIE) with laparoscopic/histologic confirmation. Design: Prospective observational study. Setting: University hospital. Patient(s): One hundred four women with suspected DIE on the basis of TVS. Intervention(s): Patients with DIE underwent TVS evaluation before laparoscopic surgery. An accurate mapping of the extent of the disease was recorded during TVS and at laparoscopy. This new mapping system was developed to assess the extent of endometriosis by measuring the size and depth of the lesions at the various pelvic locations. Main Outcome Measure(s): Surgical and histologic confirmation of the ultrasonographic data to evaluate the presence and location of DIE and creation of a new mapping methodology for detecting DIE by TVS. Result(s): Depending on the different location of the lesions, the accuracy of TVS ranged from 76%-97%. The lowest sensitivity (59%) and accuracy (76%) were obtained for TVS in the diagnosis of vaginal endometriosis, whereas the greatest accuracy (97%) was shown in detecting bladder lesions and Douglas obliteration.
Conclusion(s):This new ultrasound mapping system is accurate for detecting the extent of DIE and may be useful for preoperative planning and intraoperative management of symptomatic patients with DIE. (Fertil Steril Ò
Endometriosis affects between 5 and 45% of women in reproductive age, is associated with significant morbidity, and constitutes a major public health concern. The correct diagnosis is fundamental in defining the best treatment strategy for endometriosis. Therefore, non-invasive methods are required to obtain accurate diagnoses of the location and extent of endometriotic lesions. Transvaginal sonography and magnetic resonance imaging are used most frequently to identify and characterise lesions in endometriosis. Subjective impression by an experienced sonologist for identifying endometriomas by ultrasound showed a high accuracy. Adhesions can be evaluated by real-time dynamic transvaginal sonography, using the sliding sign technique, to determine whether the uterus and ovaries glide freely over the posterior and anterior organs and tissues. Diagnosis is difficult when ovarian endometriomas are absent and endometriosis causes adhesions and deep infiltrating nodules in the pelvic organs. Magnetic resonance imaging seems to be useful in diagnosing all locations of endometriosis, and its diagnostic accuracy is similar to those obtained using ultrasound. Transvaginal ultrasound has been proposed as first line-line imaging technique because it is well accepted and widely available. The main limitation of ultrasound concerns lesions located above the rectosigmoid junction owing to the limited field-of-view of the transvaginal approach and low accuracy in detecting upper bowel lesions by transabdominal ultrasound. A detailed non-invasive diagnosis of the extension in the pelvis of endometriosis can facilitate the choice of a safe and adequate surgical or medical treatment
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