Breast Screening & Diagnostic Practice Test

When a prior ultrasound or mammogram exists for a palpable area, you must compare the current study with the prior imaging. This helps you determine whether you’re looking at the same lesion and whether its characteristics have changed over time. Matching labeling, field of view, size, shape, and echogenicity ensures you’re aligning the same structure across studies, so you can accurately assess stability or interval change. Detecting a change in size, margins, density, or internal features guides management decisions and reduces unnecessary biopsies when the lesion is stable.

Ignoring prior imaging misses important evolution, and recording only the current appearance or jumping straight to biopsy without comparison can lead to inappropriate conclusions.