On dynamic contrast-enhanced breast MRI, a high-risk screening study reports 'marked' background parenchymal enhancement (BPE). What is the principal practical implication of this finding?
- A It reduces lesion conspicuity and lowers the effective sensitivity of the examination ✓
- B It improves specificity by distinguishing normal from abnormal tissue
- C It contraindicates further contrast-enhanced studies in this patient
- D It confirms rupture of a silicone implant
Correct answer: A. It reduces lesion conspicuity and lowers the effective sensitivity of the examination
Explanation
Marked BPE means intense normal enhancement of fibroglandular tissue throughout both breasts, which masks enhancing lesions against this background and lowers effective sensitivity. Readers must therefore compare with subtraction images and prior studies more carefully, and BPE category should be reported in every study. It does not raise specificity, has no relation to implant integrity, and carries no implication about future contrast administration.
Reference: ACR BI-RADS Atlas, MRI Section, 5th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
Written and medically reviewed by the StethoPrep medical team.