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J Korean Soc Ultrasound Med. 2012 Dec;31(4):275-278. English. Case Report.
Kim IW , Yoon JH , Kim TH , Lee KP , Jung HK , Ko KH , Lee JT .
Department of Radiology, CHA Bundang Medical Center, CHA University, College of Medicine, Korea. lvjenny@cha.ac.kr
Department of Pathology, CHA Bundang Medical Center, CHA University, College of Medicine, Korea.
Department of Surgery, CHA Bundang Medical Center, CHA University, College of Medicine, Korea.
Abstract

Pleomorphic adenoma is a tumor rarely seen in the breast. To date, only about 70 cases have been reported in the literature. Many reports have used fine-needle aspiration biopsy in the preoperative diagnosis of these lesions. However, pleomorphic adenoma is sometimes mistaken for a malignant tumor because of its cytologic features. In this study, we present a 56-year-old woman with a palpable breast mass. Ultrasound indicated a 15 mm oval-shaped hypoechoic mass with complex echogenicity in the palpable region. Ultrasound-guided core needle biopsy (US-CNB) revealed a pleomorphic adenoma of the breast, which was confirmed through surgical excision. Although pleomorphic adenoma is rarely seen in the breast, results demonstrate the usefulness and accuracy of US-CNB in diagnosing pleomorphic adenoma of the breast.

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