Second round XXXX : how many were visible on the first round of the UK National Breast Screening Programme, three years earlier?

@entity1 @entity0 @entity75 @entity5 @entity854
The first round screening films of 100 @entity1 who had @entity5 detected in the second round of the NHS Breast Screening Programme, were reviewed blindly, and then retrospectively, with knowledge of the site of the subsequent @entity5 . On initial blind viewing of the first screening mammograms, a lesion, later histologically proven to be the @entity5 , was correctly identified in 25 false- @entity75 . However, 51 @entity75 which did not develop into @entity5 were also identified. Review with knowledge of the site of the lesions at second round screening identified an additional 19 @entity75 . The mammographic features of the 25 @entity75 initially identified on blind review were ill-defined masses (52%), architectural distortion (20%), asymmetrical densities (16%), enlarged lymph nodes (8%) and a well defined lesion (4%). Sixteen of these lesions were classified as minimal change, suspicious change in four, clearly malignant in three and benign in two. Forty-eight percent of the @entity75 occurred in the established review areas of the breast. On retrospective review, 25% of incident round screen detected @entity0 were potentially detectable on the previous screening mammograms and the majority of these lesions were ill-defined masses that were more likely to occur in the 'review areas' of the breast. However, only 7% demonstrated mammographic features that were clearly recognized as suspicious of @entity5 . We therefore recommend that radiologists involved in screen reading should pay particular @entity854 occurring in the so-called review areas.
