Size of Papillary Projection/Solid Component in O-RADS US Risk Stratification and Management System

Abstract

The O-RADS system has mostly used the evidencebased terms and definitions of the International Ovarian Tumor Analysis (IOTA) model (1, 2, 3). The maximum size of papillary projection/solid component is one of these features that has a nearly high positive likelihood ratio (LR) of malignancy (2.4). This item had a higher positive LR compared to other variables related to the size of the solid part as papillary/lesion ratio and solid/lesion ratio with positive LR of 1.6 and 1.5 respectively (2).