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Unusual sonographic findings in a case of atypical medullary inflammatory carcinoma of the breast

We report the case of a 35‐year‐old woman who complained of a rapid enlargement of a pre‐existing breast mass and yellowish nipple discharge. Clinical examination revealed a firm mass measuring 15 × 10 cm and “peau d'orange” phenomenon. Sonography revealed a well‐defined mass with heterogeneous echotexture and hyperechoic trabecular structures that delineated hypoechoic areas, resulting in a honeycomb pattern. The patient underwent a surgical exploration and a biopsy of the mass and of the skin. The histopathologic examination revealed an atypical medullary carcinoma with high mitotic activity. © 2008 Wiley Periodicals, Inc. J Clin Ultrasound, 2008