Fig. 2From: A model to predict the risk of lethal nasopharyngeal necrosis after re-irradiation with intensity-modulated radiotherapy in nasopharyngeal carcinoma patientsPathologic characteristics of nasopharyngeal necrosis. The three necrotic tissues (a–c) were taken from three NPC patients. Hematoxylin–eosin staining of nasopharyngeal necrosis is similar that shows many red-stained substances without cellular structure (arrows)Back to article page