Tubo-Ovarian Abscess (with/without Pseudotumor Area) Mimicking Ovarian Malignancy: Role of Diffusion-Weighted MR Imaging with Apparent Diffusion Coefficient Values

PloS One
Tingting WangYanfen Cui

Abstract

To assess the added value of diffusion-weighted magnetic resonance imaging (DWI) with apparent diffusion coefficient (ADC) values compared to MRI, for characterizing the tubo-ovarian abscesses (TOA) mimicking ovarian malignancy. Patients with TOA (or ovarian abscess alone; n = 34) or ovarian malignancy (n = 35) who underwent DWI and MRI were retrospectively reviewed. The signal intensity of cystic and solid component of TOAs and ovarian malignant tumors on DWI and the corresponding ADC values were evaluated, as well as clinical characteristics, morphological features, MRI findings were comparatively analyzed. Receiver operating characteristic (ROC) curve analysis based on logistic regression was applied to identify different imaging characteristics between the two patient groups and assess the predictive value of combination diagnosis with area under the curve (AUC) analysis. The mean ADC value of the cystic component in TOA was significantly lower than in malignant tumors (1.04 ± 0 .41 × 10(-3) mm(2)/s vs. 2.42 ± 0.38 × 10(-3) mm(2)/s; p < 0.001). The mean ADC value of the enhanced solid component in 26 TOAs was 1.43 ± 0.16×10(-3) mm(2)/s, and 46.2% (12 TOAs; pseudotumor areas) showed significantly higher signal intensity on D...Continue Reading

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Citations

Jun 2, 2020·The Indian Journal of Radiology & Imaging·Shabnam Bhandari GroverSudha Prasad
Jun 2, 2020·The Indian Journal of Radiology & Imaging·Deepak Patkar

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