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Int J Gynaecol Obstet. 2017 Jun;137(3):325-331. doi: 10.1002/ijgo.12153. Epub 2017 Apr 12.

Diagnostic performance of the Gynecology Imaging Reporting and Data System for malignant adnexal masses.

Zhang T1,2,3,4, Li F5,2,3,4, Liu J5,2,3,4, Zhang S1,2,3,4.

Author information

1
Department of Ultrasound, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.
2
National Clinical Research Center for Cancer, Tianjin, China.
3
Key Laboratory of Cancer Prevention and Therapy, Tianjin, China.
4
Tianjin's Clinical Research Center for Cancer, Tianjin, China.
5
Cancer Prevention Center, Tianjin Medical University Cancer Institute and Hospital, Tianjin, China.

Abstract

OBJECTIVE:

To evaluate the Gynecology Imaging Reporting and Data System (GI-RADS) for diagnosis of malignant adnexal masses in a Chinese population.

METHODS:

A retrospective study was conducted of patients who underwent evaluation of suspected adnexal masses at a hospital in Tianjin, China, between January 1, 2015, and January 31, 2016. Ultrasonographic diagnosis was based on the GI-RADS classification-a standardized summary of imaging data that estimates the risk of malignancy-and compared with the final pathological diagnosis.

RESULTS:

Among 242 patients, thick wall, solid papillary projection, solid area, central blood flow, ascites, and GI-RADS classification were associated with malignancy (P<0.05 for all variables). The 263 masses evaluated were classified as GI-RADS 2 (functional cyst; n=65), GI-RADS 3 (benign neoplasm; n=68), GI-RADS 4 (one or two morphological findings suggestive of malignancy; n=101), and GI-RADS 5 (≥3 morphological findings suggestive of malignancy; n=28). Four malignant cases with false-negative findings were misclassified as GI-RADS 3, whereas 24 benign cases with false-positive findings were misclassified as GI-RADS 4. The sensitivity, specificity, false-positive rate, false-negative rate, accuracy, and Youden index of the GI-RADS classification were 96.4%, 84.3%, 18.5%, 3.0%, 89.3%, and 80.7%, respectively.

CONCLUSION:

The GI-RADS classification performed well in the diagnosis of malignant adnexal masses.

KEYWORDS:

Adnexal masses; Gynecology Imaging Reporting and Data System; Imaging diagnosis; Malignancy; Ovarian carcinoma; Ultrasonography

PMID:
28295272
DOI:
10.1002/ijgo.12153
[Indexed for MEDLINE]

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