P40.04: 3D ultrasonographic features in endometriotic and hemorrhagic cysts

To compare the features using the histogram data between hemorrhagic and endometriosis cysts. 28 patients have been retrospectively evaluated, 14 of them with ovarian endometriotic cyst (EC) histologically proved and 14 with hemorrhagic cyst (HC) which ultrasonographic follow up demonstrated the cyst regression and normalization of ovarian pattern. All cysts were studied with 3D-4D Expert® (GE) ultrasonographer using the histogram provided by the software Sonoview 4.0®. The volume and MG parameter were obtained in a rotation of 15a above coronal map. MG parameter was interpreted as tissular characterization. Mean age was of 33.7 ± 5.0 year-old in patients with EC and of 37.3 ± 5.4 year-old in patients with HC (p: n.s). Volume was 22.5 ± 21.5 cc in EC and 27.4 ± 15.7 cc in HC (p: n.s). MG parameter value was 45.2 ± 5.3 in EC and 34.6 ± 4.16 in HC (P < 0.001). R.O.C curve showed a MG parameter cut-off point of 40 to distinguish between EC and HC with a sensitivity of 85.7%, specificity of 92.9%, PPV of 92.3% and PNV of 86.7%. MG parameter value can be useful in ultrasonographic distinction between EC and HC. If a EC is diagnosed it should be treated whereas if HC is detected ultrasonographic follow-up to demonstrate the ovarian pattern normalization can be done.