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. 2010 Mar 30;8:24. doi: 10.1186/1477-7819-8-24

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Copyright ©2010 Chen et al; licensee BioMed Central Ltd.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Microscopic findings. (A) Pleomorphic adenoma in a chondromyxoid, fibrotic and sclerotic stroma with the malignant areas of carcinoma component consisting epithelial clusters with necrosis. (H&E, 40×), (B) Carcinoma component is composed of cells with pleomorphic nucleus, mitotic activity and comedo-like necrosis. (H&E, 100×), (C) The carcinoma ex pleomorphic adenoma consisting benign pleomorphic adenoma and poorly differentiated carcinoma with the ulcerative epithelial surface. (H&E, 40×), (D) Tumor cells presented the perineural invasion (H&E, 400×).