Related Experiment Video
Updated: Jan 22, 2026
Assessment and Evaluation of the High Risk Neonate: The NICU Network Neurobehavioral Scale
Published on: August 25, 2014
Preoperative Risk Stratification of Adnexal Masses Using the International Ovarian Tumor Analysis (IOTA) Simple Rules
Kaarthika T1, Sasikala Kathiresan2
1Gynaecology, Sivakasi Nadar Uravinmurai Hospital, Madurai, IND.
Objective:
The objective of this study was to compare the diagnostic accuracy of International Ovarian Tumor Analysis (IOTA) Simple Rules with Risk of Malignancy Index 2 (RMI 2) for preoperative stratification of adnexal masses, and to assess the performance of serum CA-125 and handling inconclusive IOTA results, using histopathology as the reference standard.
Methods:
A prospective diagnostic accuracy study was conducted at a tertiary care center in South India, enrolling 56 women aged ≥18 years with ultrasonographically detected adnexal masses scheduled for surgery. IOTA Simple Rules and RMI 2 scoring were applied preoperatively. All patients underwent surgical excision, and the final diagnosis was based on histopathology. Diagnostic metrics, including sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), accuracy, and area under the ROC curve (AUC), were calculated. Sensitivity analyses were performed for inconclusive IOTA cases, and statistical comparisons used DeLong and McNemar's tests.
Results:
Of 56 cases, 11 (19.6%) were malignant and 45 (80.4%) benign. IOTA Simple Rules were conclusive in 52 (92.9%) cases. For conclusive IOTA, sensitivity was 90.9%, specificity 95.1%, PPV 83.3%, NPV 97.5%, accuracy 94.2%, and AUC 0.930. RMI 2 showed sensitivity 72.7%, specificity 97.8%, PPV 88.9%, NPV 93.6%, accuracy 92.9%, and AUC 0.853. Sensitivity analyses revealed robust NPV and accuracy with alternative coding of inconclusive IOTA results.
Conclusion:
IOTA Simple Rules provide superior sensitivity and comparable specificity compared to RMI 2, supporting their role as a safe and reliable first-line tool for preoperative risk stratification of adnexal masses in gynecologic practice.
More Related Videos
08:42Design and Implementation of an fMRI Study Examining Thought Suppression in Young Women with, and At-risk, for Depression
Published on: May 19, 2015
05:52Handwriting Analysis Indicates Spontaneous Dyskinesias in Neuroleptic Naïve Adolescents at High Risk for Psychosis
Published on: November 21, 2013
Related Concept Videos
01:12Relative Risk
01:26Factors Affecting the Risk of Infection
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...
01:20Criteria for Aromaticity and the Hückel 4n + 2 Rule
For the first time, Eric Hückel, a German chemical physicist, derived a set of structural features for a compound to be classified as aromatic. This is now known as Hückel’s rule or the 4n +...
01:17Design Example: Analyzing Capacity Contours for Flood Risk Assessment
02:55Exceptions to the Octet Rule
02:57Southern Blot
Denatured DNA fragments must be transferred onto a carrier membrane from the gel to make it accessible to a probe - a small ssDNA fragment complementary to the target DNA...