BACKGROUND Radiation-induced parotid damage is a common complication in patients with nasopharyngeal carcinoma (NPC) treated with radiotherapy to head and neck region, which severely reduce the life quality of those patients. The aim of this study was to early evaluate the changes of irradiated parotid glands with T2 mapping and mDIXON Quant imaging. METHODS Forty-one patients with NPC underw...

Objective: The purpose of this study was to compare the use of cross-sectional imaging techniques verses surgery in locating parotid masses. Material and Methods: Our study was performed on patients assumed to have parotid masses from Dec 2010 to Dec 2011. Before surgery, imaging studies (Computed Tomography and Magnetic Resonance Imaging) of parotid were done. After surgery, we compared the s...

Introduction: Background: Radiotherapy of parotid tumors is achieved by different radiotherapy techniques. So they deliver the dose to organs at risk such as contralateral parotid, temporal lobe & spinal cord. The consequences of high dose to OARs are xerostomia, Temporal lobe necrosis and loss of hearing. Purpose: The aim of this study was to compare different treatment tech...

Benign lymphoepithelial cysts of the parotid are common in retropositive patients, but extremely rare in HIV-negative individuals. We present a 28-year-old man who presented with a painless, gradually increasing swelling in the left parotid region and was clinically diagnosed to have a pleomorphic adenoma of the left parotid gland. Preoperative blood investigations revealed that the patient was...

objective: the purpose of this study was to compare the use of cross-sectional imaging techniques verses surgery in locating parotid masses. material and methods: our study was performed on patients assumed to have parotid masses from dec 2010 to dec 2011. before surgery, imaging studies (computed tomography and magnetic resonance imaging) of parotid were done. after surgery, we compared the su...

The goal of this study was to evaluate real-time volumetric and dosimetric changes of the parotid gland so as to determine replanning criteria and timing for parotid protection-based adaptive radiation therapy in nasopharyngeal carcinoma. Fifty NPC patients were treated with helical tomotherapy; volumetric and dosimetric (D mean, V 1, and D 50) changes of the parotid gland at the 1st, 6th, 11th...

OBJECTIVE To explore the application of parotid R2* values for evaluating Sjögren syndrome (SS). METHODS Twenty-four consecutive SS patients and 24 sex-matched and age-matched healthy volunteers underwent bilateral parotid 3.0 T magnetic resonance (MR) imaging, including blood oxygenation level dependent sequence. Parotid R2* values of SS patients and volunteers were compared. A receiver oper...

lymphoepithelial cyst of oral cavity is a rare cystic lesion that presents as an asymptomatic submucosal mass and is usually discovered during routine dental examinations. the site most commonly affected is floor of the mouth and tonsillar involvement seems to be very rare. multiple lymphoepithelial cysts have been reported in parotid of hiv positive patients however in oral cavity they usually...