نتایج جستجو برای: parotid gland

تعداد نتایج: 81512  

Journal: :American journal of otolaryngology 2004
Allison T Pontius Yadranko Ducic

OBJECTIVES To present 2 cases of neuroendocrine tumors of the parotid gland and to review the clinical presentation, histopathologic, and immunohistochemical findings and treatment of these rare tumors. STUDY DESIGN Case series. METHODS This study reviews 2 patients who both presented with firm masses in the parotid gland diagnosed as neuroendocrine carcinoma by histopathologic and immunohi...

Journal: :Head & neck 2013
Bridget Loehn Collin Sutton Jennifer Jastram-Belcher Anthony Harton Dwayne Anderson Rohan R Walvekar

Sialadenoma papilliferum is a rare benign salivary gland tumor. We present an unusual case of sialadenoma papilliferum of the parotid gland, discuss clinical presentation, diagnostic challenges, and review of the literature. A 65-year-old male smoker presented with a large, exophytic, fungating, painless mass in the tail parotid for 8 years. The tumor developed an exophytic component 2 years be...

Journal: :Molecular and cellular biology 2002
Dietmar Riedel Wolfram Antonin Rafael Fernandez-Chacon Guillermo Alvarez de Toledo Tobias Jo Martin Geppert Jack A Valentijn Karin Valentijn James D Jamieson Thomas C Südhof Reinhard Jahn

Rab3D, a member of the Rab3 subfamily of the Rab/ypt GTPases, is expressed on zymogen granules in the pancreas as well as on secretory vesicles in mast cells and in the parotid gland. To shed light on the function of Rab3D, we have generated Rab3D-deficient mice. These mice are viable and have no obvious phenotypic changes. Secretion of mast cells is normal as revealed by capacitance patch clam...

2015

Primary lymphomas arising from the parotid gland are uncommon and usually account for only 0.6–5% of tumors or tumor-like lesions of the parotid, and therefore are commonly overlooked. Most cases involve the major salivary glands, primarily the parotid (50-93%) and the submandibular glands [1]. The misdiagnosis often leads to unnecessary diagnostic procedures thereby delaying the initiation of ...

2017
Yongtao Yang Kongliang Li Yufan Wang Hongyu Yang

Nasopharyngeal carcinoma (NPC) is one of the most common epithelial malignancies in the head and neck region with a marked racial predilection in Southern Chinese, which metastasize to parotid gland, and it is extremely rare. In these populations, it is usually associated with Epstein-Barr virus (EBV). The existence of EBV in tumor cells, aberrant type of antibodies against EBV antigens in pati...

2016
Wei Zhang Guan-Qiao Jin Jun-Jie Liu Li-Li Wang Dong Xie Ning-Bin Luo Xiang-Yang Huang Dan-Ke Su

Objective: The purpose of this study was to clarify the diagnostic value of susceptibility weighted imaging (SWI) for distinguishing malignant from benign parotid gland lesions by Magnetic Resonance. Methods: This research prospectively collected the preoperative SWI findings of 41 patients including 12 malignant and 29 benign parotid gland lesions which were confirmed by surgical pathology lat...

Journal: :Turkish journal of medical sciences 2014
Mei Yong Ling Yang Qimuge Suyila Wenyan Han Hongwei Yuan Cheng Zhao Xiulan Su

BACKGROUND/AIM To investigate the expression of P53, P63, and P73 proteins in malignant parotid gland tumors and adjacent nonneoplastic tissues and the association between the 3 proteins and their clinical characteristics. MATERIALS AND METHODS A total of 40 pairs of paraffin-embedded malignant parotid gland tumors and adjacent nonneoplastic tissues were collected. We detected P53, P63, and P...

2008
R Horta F Barreto M Marques M Rebelo JC Reis JM Lopes JM Amarante

The occurrence of a second malignant neoplasm (SMN) in patients who have been submitted to kidney transplantation is increasing and causes concern; parotid carcinoma is rarely reported after transplantation and may be related to long-term chemotherapy.Salivary gland carcinomas displaying exclusively myoepithelial differentiation-myoepithelial carcinomas (EMC) are rare, being less than 1% of all...

2015
Johannes H. Matse Janice Yoshizawa Xiaoyan Wang David Elashoff Jan G. M. Bolscher Enno C. I. Veerman C. René Leemans Michiel D. Pegtel David T. W. Wong Elisabeth Bloemena Yun Zheng

BACKGROUND Currently, clinical examination, ultrasound scanning (with or without fine needle aspiration cytology), preoperative CT-scan and MRI are available for the differential diagnosis of parotid gland swelling. A preliminary non-invasive salivary diagnostic tool may be helpful in the clinical decision making process. Altered salivary micro-RNA (miRNA) expression levels have been observed i...

2015
Toufik Berri Said Azizi

Cystic lymphangioma; Hygroma; Parotid gland; Management Abstract Cystic lymphangioma (CL) of the parotid gland is an uncommon benign congenital tumor and very few cases have been reported in adults. We report and discuss the case of a large CL of the parotid gland in a 66-year-old woman. On computed tomography (CT) the tumor appeared as a large, well defined, unilocular cyst of the parotid regi...

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