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Case Reports in Surgery
Volume 2014, Article ID 747951, 4 pages
http://dx.doi.org/10.1155/2014/747951
Case Report

Nodular Fasciitis of the Breast Mimicking Breast Cancer

Department of Breast Surgery, Yokohama Rosai Hospital, 3211 Kozukue-cho, Kouhoku-ku, Yokohama 222-0036, Japan

Received 25 February 2014; Revised 8 May 2014; Accepted 9 May 2014; Published 20 May 2014

Academic Editor: Dimitrios Mantas

Copyright © 2014 Shinya Yamamoto et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Nodular fasciitis is a benign proliferative lesion that is usually found in the soft tissue of the upper extremity and trunk in young to middle-aged persons. It has rarely been described in the breast. A 35-year-old woman had noticed a mass in her left breast. It was elastic-hard, 13 mm in size, and located mainly in the upper inner quadrant of the left breast. Mammography did not detect the mass. Ultrasonography revealed a hypoechoic lesion with an irregular margin. Neither fine-needle aspiration cytology nor core needle biopsy established a definitive diagnosis. Excisional biopsy was therefore performed. Histologically, the excised tumor tissue results were consistent with a diagnosis of nodular fasciitis of the breast. We report a case of nodular fasciitis of the breast, a rare histological type of breast tumor.