The International Ovarian Tumor Analysis (IOTA) Simple Rules Risk Score predicts risk of malignancy in adnexal masses using ultrasound features.

The Simple Rules were developed by clinicians and statisticians from the International Ovarian Tumor Analysis (IOTA) group, based on clinical and ultrasound data from 1066 women recruited at 9 centers in 5 countries (Italy, Belgium, Sweden, France, and UK).

Aug 25, 2021 · The International Ovarian Tumor Analysis (IOTA) group ultrasound rules for ovarian masses are a simple set of ultrasound findings that classify ovarian masses into benign, malignant or inconclusive masses.

Timmerman DV, L.; Bourne, T.H.; Collins, W.P.; Verrelst H.; Vergote, I. Terms, definitions and measurements to describe the sonographic features of adnexal tumors: a consensus opinion from the International Ovarian Tumor Analysis (IOTA) group.

5 features typical for benign tumours (B-features). - 5 features typical for malignant tumours (M-Features). -Inconclusive – no features apply or both B- and M-features apply. Using IOTA a mass is classified as benign if at least one B-Feature is present and no M-features are present.

IOTA simple rule is an effective tool for identifying malignant adnexal masses. It also suggests that IOTA-simple rules can be used as a diagnostic criterion for differentiating adnexal masses into benign and malignant on an out-patient department basis.

We compared ultrasonographic ovarian mass scoring systems (Sassone score, Lerner score, and IOTA ADNEX) and evaluated the factors that could predict the malignancy risk in pregnant women.

Jan 6, 2022 · The IOTA Simple Rules for assessing adnexal lesions at US comprise five B (benign) rules and five M (malignant) rules. The 10 Simple Rules can increase confidence and accuracy in categorization and characterization of adnexal masses as benign, malignant, or …

B Color score of 1 is given when no blood flow within the septa, cyst walls, or solid tumor areas. B Color score of 2 is given when only minimal flow can be detected. B Color score of 3 is given when moderate flow is present. Color score of 4 is given when the adnexal mass appears highly vascular with marked blood flow. Acoustic shadows

The Simple Rules consist of five features typical for benign tumors (B-features) and five features typical for malignant tumors (M-features). Tumors are classified as Benign, Malignant or Inconclusive: Timmerman D, Van Calster B, et al. Am J Obstet Gynecol 2016;214:424-437. LR2 uses six predictors (one clinical, plus five ultrasound):