Figure 4a. Sarcoidosis in a 47-year-old woman who presented with a palpable mass. Systemic disease had been diagnosed 5 years earlier. (a) Mammogram of the right breast shows a round mass with well-circumscribed margins in the upper outer quadrant. (b) Photomicrograph (original magnification, x600; H-E stain) shows nonnecrotizing granulomatous inflammation involving a lobule.