background parenchymal enhancement
Also written as: BPE — background parenchymal enhancement
The degree of normal breast tissue enhancement on contrast-enhanced breast MRI, which can affect lesion detection and characterization.
Full Definition
Background parenchymal enhancement (BPE) refers to the enhancement of normal fibroglandular breast tissue on contrast-enhanced magnetic resonance imaging (MRI). BPE is assessed visually and categorized as minimal, mild, moderate, or marked according to the amount and intensity of enhancement in normal breast parenchyma. The degree of BPE can vary with hormonal status, menstrual cycle timing, and hormone therapy use. Higher levels of BPE may obscure or mimic breast lesions, potentially affecting the sensitivity and specificity of breast MRI interpretation. Optimal MRI timing in premenopausal women (days 7-14 of menstrual cycle) can help minimize BPE.
Usage
Usage note: Commonly abbreviated as BPE in radiology reports and follows BI-RADS lexicon terminology.
In Context
- "Moderate background parenchymal enhancement limits evaluation of the posterior breast parenchyma." — Breast MRI report
- "Background parenchymal enhancement was minimal, allowing optimal lesion detection on this study." — MRI interpretation