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Figure 6a. Moderately to poorly differentiated palpable mass (infiltrating ductal carcinoma) in a 28-year-old woman, 3 months postpartum. (a) Contrast-enhanced T1-weighted fat-saturated GRE (20/4.5; flip angle, 30°) image shows an irregular mass with an irregular and spiculated margin, features typical of invasive carcinoma. (b) T2-weighted (4000/90) fat-saturated image shows a region of low signal intensity (arrows) in the portion of the mass that appears enhanced in a. (c) The enhancement curve is type III, with an early peak and delayed phase washout. The vertical axis indicates the percentage of enhancement, and the horizontal axis indicates the time in seconds.
