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Retrospective analysis determines interval cancer rates in patients negative for screening CEM, suggesting evaluation improvements.
Purpose To determine the interval cancer rate (ICR) after negative screening contrast-enhanced mammography (CEM) and compare the characteristics of interval cancers (ICs) with those of CEM screen-detected cancers. Materials and Methods This retrospective, single-institution study included consecutive screening CEM examinations performed from January 2015 through December 2021. ICs diagnosed within 1 year of a negative screening CEM and all CEM screen-detected cancers were identified. Two breast radiologists independently reviewed prior negative CEM examinations to classify ICs as missed, misinterpreted, or occult. Patient- and lesion-level characteristics were compared between ICs and screen-detected cancers using the Wilcoxon rank sum test for continuous variables and the Fisher exact or χ
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Amir et al. (2026) studied this question.
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