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Case Reports in Pathology
Volume 2018, Article ID 1612587, 3 pages
https://doi.org/10.1155/2018/1612587
Case Report

The Rare Benign Lesion That Mimics a Malignant Tumor in Breast Parenchyma: Nodular Fasciitis of the Breast

1Medicine Faculty, Pathology Department, Konya Uygulama ve Arastırma Hastanesi, Baskent University, Selcuklu, Konya, Turkey
2Medicine Faculty, Surgery Department, Konya Uygulama ve Arastırma Hastanesi, Baskent University, Selcuklu, Konya, Turkey

Correspondence should be addressed to Hilal Erinanc; moc.oohay@cnanirelalih

Received 5 December 2017; Accepted 25 March 2018; Published 30 April 2018

Academic Editor: Imtiaz A. Chaudhry

Copyright © 2018 Hilal Erinanc and Emin Türk. 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

We herein report the clinical and pathological findings of a rare case of nodular fasciitis in the breast parenchyma of a 48-year-old female. Because of potentially malignant findings on ultrasonography and during clinical examination, the patient underwent an excisional biopsy. Histologically, the lesion was composed of spindle to round shaped cells arranged in short bundles in a storiform pattern. Immunohistochemically, the cells were positive for vimentin and SMA and negative for desmin, S100, and CD34. Based on these morphological and immunohistochemical features, a diagnosis of nodular fasciitis was made. We emphasize that nodular fasciitis of the breast may show clinical features and imaging findings similar to those of breast cancer. The histopathologic diagnosis of nodular fasciitis can also be challenging. The purpose of this case report is to highlight the characteristics and the differential diagnosis of this rare neoplasm.