Terminal parotid duct carcinoma

Abstract
Terminal duct carcinoma of salivary glands is an uncommon, histologically distinctive, low grade malignant neoplasm arising from the intercalated salivary duct. We present a case arising eight years after removal of a parotid tumour reported as a pleomorphic adenoma. We describe the clinico-pathological features of the present tumour, illustrate the difficulties that may be encountered in differentiating it from other salivary gland tumours, and discuss the possible significance of the previous tumour.