What does architectural distortion look like on a mammogram?

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Architectural distortion on a mammogram shows disruption of the normal breast tissue pattern without a discrete lump. You’ll see lines or strands that seem to radiate from a point or converge toward an area, with the surrounding tissue appearing retracted or twisted compared with the opposite side. This depiction—distortion without a clear mass—is what makes the description match the finding. In contrast, a well-defined mass with smooth margins indicates a discrete lesion, clustered calcifications point to calcium deposits, and uniform density describes overall density rather than distortion. Architectural distortion can be due to benign scarring or radial scars, but it also raises concern for occult malignancy, so often warrants further imaging or tissue sampling.