Advances in Oral and Maxillofacial Surgery (Apr 2021)
A case report of pleomorphic adenoma squamous metaplasia resembling metastatic oral squamous cell carcinoma
Abstract
Pleomorphic adenoma is the most common benign tumour of the salivary glands. It accounts for up to 76% of all salivary gland neoplasms and most commonly affects the parotid gland. Extensive squamous metaplasia in such tumours can cause histological misinterpretation, leading to misdiagnosis in some circumstances. We present a patient who had a pleomorphic adenoma misdiagnosed as metastatic oral squamous cell carcinoma. This case highlights the potential difficulties and diagnostic pitfalls, which may arise when diagnosing pleomorphic adenomas.