Fig. 3From: Human papillomavirus-associated small cell carcinoma/neuroendocrine carcinoma of the oropharynx: a report of two casesHistologic findings of both patients with small cell carcinoma/neuroendocrine carcinoma of the oropharynx. a Hematoxylin and eosin (HE) staining of case 1. Tumor cells had small, round nuclei and scant cytoplasm. b Immunohistochemistry (IHC) for p16 in specimens from case 1 shows strong immunoreactivity. c HE staining of case 2. d IHC staining for p16 in specimens from case 2Back to article page