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Pleomorphic Adenoma : Squamous Metaplasia

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Metaplastic changes can be seen in pleomorphic adenoma following fine needle aspiration procedure. This type of change may raise the possibility of mucoepidermoid carcinoma but the intercellular bridges and keratinization are typically not seen in a mucoepidermoid carcinoma. This image shows focal areas of squamous differentiation within pleomorphic adenoma.

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