Nasopharyngeal cancer is a disease in which malignant (cancer) cells form in the tissues of the nasopharynx.
The nasopharynx is the upper part of the pharynx (throat) behind the nose. The pharynx is a hollow tube about 5 inches long that starts behind the nose and ends at the top of the trachea (windpipe) and esophagus (the tube that goes from the throat to the stomach). Air and food pass through the pharynx on the way to the trachea or the esophagus. The nostrils lead into the nasopharynx....
Revised text to state that between 1975 and 2010, childhood cancer mortality decreased by more than 50%. Also added that for Ewing sarcoma, the 5-year survival rate has increased over the same time from 59% to 78% for children younger than 15 years and from 20% to 60% for adolescents aged 15 to 19 years (added Smith et al. as reference 3).
Added De Ioris et al. as reference 23.
Added text to state that in one institutional study, FDG-PET had a very high correlation with bone scan; the investigators suggested that it could replace bone scan for the initial extent of disease evaluation. Also added text to state that this finding was confirmed in a single-institution retrospective review (cited Newman et al. as reference 3 and Ulaner et al. as reference 4).
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