Figure 2From: Head and neck region consolidation radiotherapy and prophylactic cranial irradiation with hippocampal avoidance delivered with helical tomotherapy after induction chemotherapy for non-sinonasal neuroendocrine carcinoma of the upper airwaysOat cells pattern at hematoxylin-eosin staining (Figure 2a); immunohistochemistry positive staining for AE1 and AE3 Cytokeratin (Figure 2b), Chromogranin A (Figure 2c) and CD 56 (Figure 2d).Back to article page