Sclerosing Polycystic Adenosis of the Parotid Gland - A Case Report -

Abstract

Introduction: Salivary gland tumors account for a relative small but quite heterogeneous population of head and neck neoplasm. Sclerosing polycystic adenosis (SPCA) is an extremely rare lesion of uncertain nature with histological similarity to fibrocystic disease of the breast. Frequently misdiagnosed as various types of salivary gland carcinoma, we report a case of SPCA occurring in a young patient undiagnosed until histopathologic confirmation. Material and Methods: A 26 year-old female was referred to our attention for the presence of a gradually enlarging mass in the region of the right parotid gland. After complete ENT examination including imaging study, the patient was submitted to trucut of the lesion. Morphological analysis demonstrated ductal infiltrating carcinoma of the parotid gland. Total parotidiectomy was performed with a complete preservation of the facial nerve. Results: Histological examination on surgical specimen demonstrated SPCA of the right parotid gland. No facial nerve deficit was reported. Conclusions: SPCA is an extremely rare lesion of very difficult histological diagnosis and despite the few cases reported in literature, it is needed a careful awareness of this entity.