الفهرس 
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Abstract
This prospective study was conducted at Mansoura University Hospital aiming to evaluation of accuracy of sonomammographic imaging in diagnosis of malignant breast lesions. This study included 33 females with breast lesions. All patients underwent mammography and sonograpyh and all lesions assessed as BIRADS 4a, 4b, 4c and BIRADS 5, representing (21.2%, 33.3%, 24.2%, 21.2% respectively) Histo-pathological examinations done to all lesions and reveal that 15.2% of the lesions were benign and 84.8% were malignant. When mammographic findings correlated with pathological findings, mammographic features of irregular shape, speculated margins, microlobulated margin. Lesions associated with microcalcifications, skin thickening, nipple retraction, and axillary masses, all were malignant and were individually statistically significant for depiction of a malignant lesion. Also when sonographic findings correlated with pathological findings, the sonographic features of shape, margins, border, orientation, and posterior acoustic shadowing, had statistical significance in differentiation between benign and malignant masses but echogenicity has no significant role in differentiation.