نتایج جستجو برای: head and neck neoplasm
تعداد نتایج: 16856936 فیلتر نتایج به سال:
Pilomatrixoma is a common benign soft tissue neoplasm arising from hair follicle cells, typically not exceeding 3 cm and located mainly within the head and neck regions. Lesions greater than 3 cm or those located elsewhere are rare and are often not thought of or high on a differential diagnosis. Moreover, the radiographic features of pilomatrixoma are very nonspecific making the diagnosis even...
Secondary malignancies are an infrequent but well-known phenomenon whereby radiation treatment may predispose a patient to a subsequent malignant neoplasm years after his or her initial diagnosis. The head and neck is a common site for post radiation carcinomas including salivary gland tumors such as mucoepidermoid carcinoma (MEC), acinic cell carcinoma, and even (more recently described) mamma...
Introduction & Objective: Nowadays, epidemiological and experimental evidences in western countries consistently support an etiological role for human papillomavirus (HPV) in head and neck squamous cell carcinoma (SCC). The role of HPV in the etiology of head and neck SCC in developing countries such as Iran has not been investigated. The purpose of the present study was to investigate HPV DN...
the improvement in survival and local control measures in children with neoplasm in the head and neck region may lead to increased iatrogenic adverse effects of treatment. the aim of this study was to report a new case of the long-term effects of chemoradiotherapy on oral health and dental development in a patient treated for hodgkin's disease at an early age. in this case report, a 26-year-old...
extent of surgery and outcome in cutaneous squamous cell carcinoma of the head and neck. Abstract The authors analyzed a new clinical staging system and its correlation with pathologic findings and patient survival. Patients were eligible for inclusion in this longitudinal retrospective cohort study if they had cutaneous squamous cell carcinoma on the head or neck, underwent surgery and had a m...
BACKGROUND The incidence of oropharyngeal and oral tongue cancers has increased over the last 20 years which parallels increased use of marijuana among individuals born after 1950. METHODS A pooled analysis was conducted comprising individual-level data from nine case-control studies from the United States and Latin America in the INHANCE consortium. Self-reported information on marijuana smo...
OBJECTIVES To confirm the applicability and use of a new technique to detect and quantify telomerase activity of specimens from head and neck malignant neoplasms and to explore whether the levels of telomerase activity can be a useful marker for cancer risk assessment in head and neck malignant neoplasms. DESIGN Ninety-six specimens from 39 patients with head and neck malignant neoplasms were...
Previous studies have suggested that the HIF transcription factors can both activate and inhibit gene expression. Here we show that HIF1 regulates the expression of mir-210 in a variety of tumor types through a hypoxia-responsive element. Expression analysis in primary head and neck tumor samples indicates that mir-210 may serve as an in vivo marker for tumor hypoxia. By Argonaute protein immun...
Parathyroid carcinoma is a rare endocrine neoplasm that accounts for <1% of cases primary hyperparathyroidism. The management parathyroid challenge due to the high rate local recurrence tumour. We report case middle-aged north Indian woman who presented with recurrent hyperparathyroidism carcinoma. She palpable hard neck mass and underwent radical dissection six times. At time writing this r...
PURPOSE A definition of cut-off points for nodal size is essential to determine whether cervical lymph nodes are metastatic or not. Because the currently used size criteria are defined for random populations of patients with head and neck cancer, we set out to study whether these criteria are optimal for patients without palpable metastases in different levels of the neck We defined optimal siz...
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