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VP66.13: Preoperative assessment of myometrial and cervical invasion in endometrial cancer by transvaginal sonography versus magnetic resonance imaging

(4.2%) metastases from non-genital cancer. Final histology was not in agreement with the results from transvaginal ultrasound-guided biopsy in 1 of 25 patients (4%); in particular, benign disease at transvaginal ultrasound-guided biopsy was malignant at ﬁnal histology (one cases of small recurrence of an endometrial cancer). No major complications were reported. Conclusions: Ultrasound guided tru-cut biopsy has showed a low rate of complications and it is adoptable as a standard diagnostic procedure due to the higher success rates not only in gynecologic oncology centre. Nevertheless it requires ultrasound expertise with manual skill and knowledge of the pelvic and abdominal anatomy. It allows to broadening the spectrum of interventions offered also in patients otherwise not always surgically investigable. the the accuracy, speciﬁcity, myometrial of myometrial age was 58.63years old (19,5 SD). Local anesthesia was used in the 75% of patients. In 29 patients the access point was transabdominal, while in 11 patients the route was transvaginal. Regarding ultrasound diagnoses, 30% of patients had a solid pelvic mass, 10% had a solid mass associated with ascites, 5% had a cyst mass, 5% had a cystic mass associated with ascites, 10% had carcinomatosis peritoneal, 10% had ecomixed mass, 7.5% had ecomixed mass associated with ascites, 10% had only ascites, 7.5% had a pelvic abscess and 5% had other ultrasound diagnoses. Technical success was possible in 97.5% of cases; only in one patient there was a failed drainage. Obtaining enough material for study was possible in 80%. The other 20% were diagnostic paracentesis with not enough sample for immunohistochemistry. There were not any important complications; only 11 patients suffered light pain in the puncture site and 5 patients developed superﬁcial hematoma. Conclusions: Use of ultrasound-guided interventional techniques is a useful tool in the ﬁeld of gynecology. They are safe techniques with very low complication rate. Pathological diagnosis can be achieve with minimal aggressiveness and without radiation for the patient. Although technique is operator-dependent, gyne and obstetric professional use to performance other ultrasound-guide interventions such as amniocentesis, which improves their learning curve. To assess ultrasound features of borderline tumours