Abstract
Parotid lithiasis is the main cause of calcifications in the parotid space. However, there are many other less known causes. The aim of our study was to point out the non-lithiasic causes of calcifications in the parotid space. We conducted an exhaustive review of the literature by mean of PubMed, using the keywords "parotid" and "calcification" and limiting our analysis to the original articles in humans published in English and in French. Articles reporting about microscopic calcifications and who were not dealing with parotid calcifications were excluded. Twenty articles met the inclusion criterions. Tumoral and non-tumoral local causes and systemic causes of parotid calcification were found. The way they revealed was variable. The main tumoral local causes were pleomorphic adenomas, salivary duct carcinomas and adenocarcinomas. The main non-tumoral local causes included vascular malformations and calcified parotid lymph nodes. The main systemic causes were chronic kidney diseases, HIV infection, chronic alcoholism, elevated levels of alkaline phosphatase and auto-immune diseases. Eighteen different etiologies of parotid space calcifications could be identified. First line exploration of these lesions relies mainly on conventional radiography and ultrasound examination that are easily available. CT scan remains the reference examination.
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