نتایج جستجو برای: Nasopharyngeal
تعداد نتایج: 14650 فیلتر نتایج به سال:
introduction: nasopharyngeal carcinoma is one of the most common malignancies in the head and neck region and radiotherapy is its treatment of choice. in spite of the fact that it is widely used, due to the presence of many sensitive organs or tissues in this region, patients may suffer from a wide range of side effects. one such sensitive tissue is the spinal cord. if the absorbed dose to spin...
undifferentiated nasopharyngeal corcinoma is frequently misdiagnosed as large cell malignant lymphoma. the aim of this study is to evaluate the diagnostic role of immunohistochemistry and electron microscopy in this tumor. 81 cases of nasopharyngeal carcinoma were studied. patients ranged from 9-90 years in age (mean: 48.5 years). the age incidence curve was bimodal with two peaks in 2-3 and 5-...
Introduction: Two main causes of nasal airway obstruction and mouth breathing Consist: 1- anterior nasal obstruction is caused by obstruction in nasal cavity, 2- posterior (nasopharyngeal) obstruction is caused by adenoid enlargement and decreased nasopharyngeal airway. The purpose of this study was the comparison of nasopharyngeal cephalometric measurements between two groups of mouth breathin...
to determine the addition of value of neoadjuvant, concurrent and adjuvant chemotherapy to radiation in the treatment of nasopharyngeal carcinoma with regard to the overall survival (os) and disease free survival (dfs) within a six year period in tehran cancer institute. files of all patients with nasopharyngeal carcinoma treated by radiotherapy with or without concurrent chemotherapy in a cura...
background: streptococcus pneumoniae is a major cause of childhood morbidity and mortality worldwide . several studies have explored the nasopharyngeal carriage of s. pneumonia in iran. this meta-analysis is aimed at exploring the overall prevalence of nasopharyngeal carriage of s. pneumoniae among healthy children and its resistance to antibiotics. method : we have systematically reviewed publ...
Upper respiratory tract is an unusual site for tuberculous (T.B.) infection Primary nasopharyngeal tuberculosis without pulmonary involvement is rare . Review of the articles has shown only 39 cases of secondary and primary nasopharyngeal T.B. from 1968 . This report described a 26 years old woman with nasopharynge...
TO THE EDITOR—We read with interest the recent article by Winokur et al, in which they developed a safe experimental human model of nontypeable Haemophilus influenzae (NTHi) nasopharyngeal colonization [1]. In their study, both nasopharyngeal wash specimens and nasopharyngeal swab specimens were collected to culture NTHi. Colonization was detected in nasopharyngeal wash samples from 9 subjects ...
Background and Aim: Adenoids are normally large in children and their size starts to reduce during adolescence. Hypertrophic adenoids could be associated with allergic reactions. Enlarged adenoids result in nasal breathing difficulties and the child is forced to switch to mouth breathing. Airway obstruction causes postural alterations of jaw, tongue and head, and due to persistent obstruction, ...
Background and purpose: Respiratory function of patients is a major part of orthodontic diagnosis and treatment planning. It is affected by the dimensions of the pharyngeal airway. In this study, these dimensions were compared in patients with different skeletal patterns. Materials and methods: This cross-sectional descriptive-analytical study was performed studying the cephalograms of pa...
statement of problem: nasopharyngeal obstruction by adenoid enlargement is one of the main causes of mouth breathing. diagnostic indices of nasopharyngeal obstruction by lateral cephalometric radiography are controversial. purpose: the purpose of this study was to diagnose the nasopharyngeal obstruction by means of lateral cephalometric radiography. materials and methods: in this research two g...
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