Claudia Gabriela Vicente MD, Abstract Co-Author: Nothing to Disclose

Victoria Suárez, Abstract Co-Author: Nothing to Disclose

Marina Lucchesi MD, Abstract Co-Author: Nothing to Disclose

Laura Cristina Dragonetti MD, Abstract Co-Author: Nothing to Disclose

Alfredo Eugenio Buzzi MD, Abstract Co-Author: Nothing to Disclose

Nadia Lochocki MD, Presenter: Nothing to Disclose

To determinate the usefulness of a recent proposal of classification for US Adnexal Images named GI-RADS (Gynecologic Imaging Reporting and Data System) based on transvaginal ultrasound (TVS) and color doppler (CD)

3453 patients which came to our service for routine US were evaluated through TVS. The median age was 36 years (range 18 – 81). Adnexal examination was performed using the B mode and supported with CD in cases of abnormal findings. We applied the classification as described by Amor, F. and cols. : GI-RADS 0: not conclusive, GI-RADS 1: normal ovaries; GI-RADS 2: very probably benign; GI-RADS 3: probably benign; GI-RADS 4: probably malign and GI-RADS 5: very probably malign. In GI-RADS 1and 2 patients routine follow-up was applied while some GI-RADS 3 patients were closely followed with periodic US for a median of 12 months (range 6 – 18). Others GI-RADS 3 as well as all GI-RADS 4 and 5 patients were surgically treated and pathologic diagnose was available in all cases and compared with the GI-RADS assignment. Sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV) were calculated for GI-RADS 3, 4 and 5 as a whole.

Among 3453 patients there were 14 (0.4% ) GI-RADS 0; 2665 (77%) GI-RADS 1; 408 (12%) GI-RADS 2; 345 (10%) GI-RADS 3; 16 (0.5%) GI-RADS 4 and 5 (0.1%) GI-RADS 5. Sensitivity, specifity, PPV and NPV for GI-RADS 3, 4 and 5 considered as a whole were 85.7%, 97.4%, 57% and 99.4% respectively

In our experience, this proposal of classification for reporting US images of the adnexa provides an accurate and simplified system, comparable to the mammography BI-RADS.

The adnexal masses plain description is of doubtful help for the clinicians and the new system as used in mammography (BI-RADS), should lead a better communication between sonographers and clinicians.

Vicente, C, Suárez, V, Lucchesi, M, Dragonetti, L, Buzzi, A, Lochocki, N, GI-RADS: A New Classification for Reporting Ultrasound Adnexal Images.  Radiological Society of North America 2010 Scientific Assembly and Annual Meeting, November 28 - December 3, 2010 ,Chicago IL. http://archive.rsna.org/2010/9011604.html