Correlation between ultrasound and Magnetic Resonance Imaging in diagnosis of Ovarian Tumors

Abstract

Background and objective: To discuss the value of ultrasound (US) and magnetic resonance imaging (MRI) in the evaluation of female patients with ovarian tumors. Methods: This study was performed on 250 patients at University hospital and the National Cancer Institute who were referred to radiodiagnosis department from the Obstetric and Gynecology department during the period from March 2017 to March 2018. All patients were subjected to pathology assessment, transvaginal ultrasonography (TVUS) and MRI with diffusion-weighted imaging (MRI-DWI). Results: The study group of 250 patients had a mean age of 38.85 ± 17.1 years. Lesions were classified according to histo-pathological analysis into benign (120 lesions, 48%) and malignant (130 lesions, 52%). Using US with Doppler, 105 cases were judged benign, and 145 cases were judged malignant. The sensitivity of the US with doppler examination the sensitivity was 81.51%, with 93.9% specificity, The positive predictive value (PPV) was 91%, and the NPV was 86%. MRI analysis indicated that the mean dimension of benign tumors was 7.6 ± 1.3 cm, while the mean dimension of malignant tumors was 12.3 ± 2.4 cm (p<0.001). The sensitivity of MRI was 96.43%, specificity was 95.83%, PPV. The apparent diffusion coefficient (ADC) values were 1.85 ± 0.58 for benign tumors and 0.84 ± 0.16 for malignant tumors. MRI-DWI showed 100% sensitivity, 93% specificity, 95.5% PPV, and 98% NPV. Conclusion: MRI-DWI are promising techniques for the evaluation and characterization of ovarian cancer.

Diffusion Weighted Magnetic Resonance Imaging in Evaluation of Gynecological Masses

“…In the current investigation, the majority of malignant lesions (69.2 percent) exhibited moderate enhancement as nodular and septation enhancement. In consistency with this study findings, the recent Egyptian studies of El-Sayed et al [18], Mansour et al [33], Hamed et al [34] and Abd-Elmageed et al [20] reported that the appearance of benign and malignant lesions was rather similar in T1WI and T2WI, but as regarding contrast enhancement, the gynecological masses showed different pattern of enhancement according being benign or malignant.…”

“…In line with the present study, there was an initial experience in 2004, conducted by Sarty et al (124) 12 cases were examined to assess the viability of ADC measurement for the differential diagnosis of cancer. The conclusion of the research was that ADC measurement, intensity, and texture may identify malignancy in ovarian tumours.In addition, El-Sayed et al [18], Mansour et al [33], Hamed et al [34] and Abd-Elmageed et al [20] reported that although some overlaps were found in the ADC values of benign and malignant lesions, yet the mean ADC value of malignant masses was significantly lower than that of benign, which is similar to current study. Thomassin-Naggara et al [35] evaluated the contribution of DWI in conjunction with morphological criteria to characterize gynecological masses.…”

Doppler Ultrasound versus Pelvic Magnetic Resonance Imaging in diagnosis of ovarian mass in teenagers: A Prospective study

“…Magnetic resonance imaging (MRI) provides useful data as regards the classification of several ovarian masses as neoplastic or non-neoplastic, and benign or malignant. MRI can identify an adnexal mass and may be useful to differentiate between benign and malignant tumours [15] .…”