Fig. 2
![Fig. 2](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs40880-018-0325-9/MediaObjects/40880_2018_325_Fig2_HTML.jpg)
Representative images of nasopharyngeal masses. a normal (adenoids hyperplasia); b Nasopharyngeal carcinoma; c fibroangioma; d malignant melanoma
Representative images of nasopharyngeal masses. a normal (adenoids hyperplasia); b Nasopharyngeal carcinoma; c fibroangioma; d malignant melanoma