Ultrasonic differential diagnosis of pelvic cysts and the value for respiration therapy

Objective To evaluate the sonography features of different pelvic cysts and the value for guiding cases choice of ultrasound-guided respiration therapy. Methods The sonographic features of 526 pelvic cysts and their pathological diagnosis and the results of ultrasound-guided respiraion therapy in 144 lesions were analyzed. Results The total coincidence rate between sonographic and pathological diagnosis was 95.6% (503/526).Parts of cystic teratoma, mucinous cystadenoma, hyosalpinx, hemorrhagic ovarian cysts and serous cystadenoma have a sonographic appearance similar to that of endometriosis cysts or parovarian cysts.The most of recurrent cases after ultrasound guidancerespiration therapy are endometriosis cysts with thick wall, internal block echoes or the time is shorter than 3 minutes for ethanol coagulation. Encapsulation cysts and postmenopausal cysts can disappear after anti-inflammatory therapy or during the period of following up. Conclusion The accurate rate of ultrasonic differential diagnosis for pelvic cysts was high. However, some lesions without typical ultrasonic features could be misdiagnosised. It is necessary to follow up for 2-3 menstrual cycles with ultrasonography before ultrasound-guidance aspiration therapy is performed.