نتایج جستجو برای: parotid mass
تعداد نتایج: 483133 فیلتر نتایج به سال:
introduction: salivary gland tumors are relatively rare and constitute 3-4% of all head and neck neoplasms. the majority (70%) of salivary gland tumors arise in the parotid gland. recommended treatment for a parotid mass is surgical excision with a surrounding cuff of normal tissue to prevent recurrence. materials and methods: this is a retrospective study of 300 patients who were operated by a...
Most of the primary malignant lymphomas of the salivary glands originate from the parotid gland. We presented two patients who were admitted with a painless mass in the parotid region and diagnosed to have a lymphoma. Physical examination of a 66-year-old male patient showed a relatively mobile, painless, and firm mass at the inferior aspect of the right parotid gland. Ultrasonography, computed...
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...
Introduction: Salivary gland tumors are relatively rare and constitute 3-4% of all head and neck neoplasms. The majority (70%) of salivary gland tumors arise in the parotid gland. Recommended treatment for a parotid mass is surgical excision with a surrounding cuff of normal tissue to prevent recurrence. Materials and Methods: This is a retrospective study of 300 patients who were operated b...
Introduction: Xerostomia is the most common complication due to radiation–induced damage to salivary glands in head and neck cancer radiotherapy and it reduces quality of life. Parotid glands are main glands which they are account for secretion of stimulated saliva. Studies have demonstrated that mean tolerance parotid’s radiation dose under 26-30 Gy result in an increase in t...
Mucoepidermoid carcinoma (MEC) is the most
 common malignant tumor of salivary gland and
 most commonly seen in parotid. Oncocytic
 mucoepidermoid (OMEC) a rare
 subtype. Here, we aimed to present histological,
 immunohistochemical, and molecular results a
 28-year-old female patient followed for endometrial
 cancer, whether mass right parotid primary or metas...
Cholesteatoma is a pathological tissue that may extend into all parts of temporal bone and rarely, as this study highlights, beyond its structures. Nevertheless, the spread outside the mastoid tip into the soft tissues of the neck or parotid space is very rare. The case of 23-year-old male with right parotid mass is presented. The patient had history (2006, 2009, and 2012) of three tympanoplast...
Small cell carcinoma (SCC) is a malignant epithelial tumor that predominantly arises in the lungs. Primary SCC of the parotid gland is rare and difficult to diagnose by analysis of frozen sections obtained during surgery. Due to the aggressive nature of SCC and the frequent occurrence of distant metastases, identification of the disease is important. The current study reports the case of a male...
Parotid gland oncocytoma is an uncommon, benign salivary neoplasm composed of mitochondria-rich oncocytes. The purpose of this study was to correlate MR imaging and histopathology of parotid gland oncocytomas and to define the features that may distinguish these neoplasms from other benign and malignant parotid gland tumors. The MR imaging features in 9 patients with a pathologic diagnosis of o...
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