AIM: To investigate the relationship between ultrasound characteristics, mammographic findings and histological grade in cases of @entity513 which produce a mass on ultrasound. MATERIAL AND METHODS: A retrospective review was performed of the imaging findings in 120 @entity1 diagnosed with @entity9962 between January 1996 and December 1997. Imaging findings were correlated with the histological grade of @entity5 . RESULTS: High-grade @entity5 were significantly larger both on ultrasound and mammography (P < 0.016). A spiculated margin on mammogram was documented in 72% of low-grade @entity5 compared with only 24% of high-grade @entity5 (P = 0.001). Twenty-two per cent of low-grade @entity5 had a poorly defined margin on mammography compared with 66% of high-grade @entity5 (P = 0.001). At ultrasound, 16% of high-grade @entity5 (95% confidence limits 7-29%) had a well-defined margin. Acoustic enhancement was seen in 36% of high-grade @entity5 compared with only 9% of low and intermediate-grade @entity5 (P = 0.003): 22% of all @entity5 showed acoustic enhancement. Acoustic shadowing was seen in 71% of low-grade @entity5 compared with only 28% of high-grade @entity5 (P = 0.003). @entity5 was seen on mammogram in 6% of low-grade @entity5 compared with 31% of high-grade @entity5 (P = 0.045). CONCLUSION: The classical appearance of a malignant breast mass as a spiculated mass on mammogram associated with acoustic shadowing on ultrasound is more typical of a low-grade @entity5 . In comparison, high-grade @entity5 are more likely to demonstrate posterior acoustic enhancement, and a proportion has a well-defined margin on ultrasound. Therefore, high-grade @entity513 may @entity2121 display similar imaging features to a benign breast mass.

Correlation between ultrasound characteristics, mammographic findings and histological grade in @entity1 with XXXX .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity9962 :: ('MESH:D018270', 'Disease') :: ['invasive ductal carcinoma of the breast'] @entity5 :: ('MESH:D009369', 'Disease') :: ['Malignant-type microcalcification', 'tumours', 'tumour'] @entity2121 :: ('MESH:D019320', 'Disease') :: ['paradoxically'] @entity513 :: ('MESH:D044584', 'Disease') :: ['invasive ductal carcinoma']
@entity9962 :: (MESH:D018270,Disease) :: ['invasive ductal carcinoma of the breast']
