Background: Globally, breast cancer accounts for a third of womens’ cancer cases. It is experinced in 1-3% of females with clinical
breast findings, negative mammogram and ultrasound. Aim: This retrospective study aimed to compare the diagnostic precision of
mammogram and ultrasound in detecting breast malignancy. Patients and methods: 332 females from the southern region of Jordan
34-75 years old were enrolled in the study. They were subjected to clinical examination, mammogram, ultrasound and
histopathological study for their breast masses at Alkarak teaching hospital. The differential diagnostic precision of both imaging
modalities were analyzed in terms of breast density and patient’s age. Based on the breast imaging reporting and data system,
mammograms were analyzed into five diagnostic categories (1-5), four grades of breast tissue density (I-IV), while, ultrasound
diagnosis was based on five diagnostic categories of the same system. Results: The histopathological examination showed 155
(19.4%) malignant and 177 (4.5%) benign lesions. All malignancies were diagnosed by ultrasound and mammogram, respectively.
The obtained results showed statistically significant difference of sensitivies and specificities between the overall ultrasound and
mammogram (P<0.05). Regarding breast tissue density, mammogram sensitivity was 83.3% and 0% in grade I and grade IV,
respectively. It was 66.7% and 40% in the same grades for ultrasound. Conclusion: The diagnostic precision of ultrasound in
differentiating between benign and malignant lesions was significantly higher than mammogram in young Patients with clinical
breast findings and dense breast tissue.
Keywords: breast, benign, malignant, diagnostic precision, mammogram,
ultrasound