More on Misclassification of Nasopharyngeal Cancer

Endoscopy of Nasopharyngeal Cancer

Nasopharyngeal cancer (NPC) is a unique disease with increasing interest for many physicians due to its unusual etiology, histology, and epidemiology. The recent era of fiberoptic endoscopy now provides the clinician with better tools for the screening, diagnosis, staging, and follow-up of NPC. The use of high resolution flexible and rigid nasopharyngoscopy gives the physician an opportunity fo...

Pancreatic cancer mortality and misclassification--bayesian analysis.

BACKGROUND Pancreatic cancer is a fatal cancer with a 5-year survival of only about 4% for all tumors. Mortality is a familiar projection to address the burden of cancers, but according to the Iranian death registry, about 20% of death statistics are still recorded in misclassified categories. The aim of this study was to estimate pancreatic cancer mortality for Iranian population, using a baye...

Evaluation of the effects of dental filling material artifacts on IMRT treatment planning in patient with nasopharyngeal cancer

Background: Presence of artifacts, caused by dental filling high-Z materials (DFM), on intensity-modulated radiation therapy (IMRT) treatment plan CT images may lead to uncertainty in head and neck calculated dose distributions. Hence, the purpose of this study was to investigate the effects of DFM on the IMRT calculated dose distribution and consequent radiobiological derived outcomes for naso...

Evaluation of the effect of dental filling material on IMRT treatment planning in patient with nasopharyngeal cancer

Introduction: Presence of dental filling material (DFM) such as amalgam in treatment patient with nasopharyngeal cancer (NPC) is common. Streaking artifact Arising from this high density material in computed tomography (scan), may lead to perturbation in dose calculation and dose delivery. Widespread performance of intensity-modulated radiotherapy (IMRT) for NPC using anterior...

Nasopharyngeal Cancer Treatment