Abstract :
The aim of this was to determine whether Magnetic Resonance Imaging (MRI) images and enhancement
features could help accurately in distinguishing benign from malignant adnexal masses. 84 women with clinically
suspected adnexal masses were prospectively studied. MRI was carried out using T1, T2, and fat-suppressed before
and after intravenous injection of contrast (gadolinium). The adnexal lesions were examined for several features
including size, shape, character, signal intensity, and enhancement. All MR imaging features were categorized as
benign or malignant without knowledge of clinical details, according to the imaging features which were compared
with the surgical and pathological findings. Results revealed that out of 80 patients confirmed with surgery and
histological evaluation, 64 (80%) of them were benign and 16 (20%) patients had malignant masses. The most
common site of the adnexal masses in both malignant and benign were on the right site of the ovaries. The overall
sensitivity of MRI for the diagnosis of malignancy was 93.75% and accuracy was 95%. Results of comparison
between MRI imaging and histopathology found that 78 of the 80- adnexal masses were identified as tumor lesions
by MRI; of which 63 were benign and 15 were malignant lesion. MRI is sensitive for differentiation benign and
malignant adnexal masses.
Keyword :
MRI, Sensitivity, Ovary, Specificity, Adnexal Lesion.