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. Author manuscript; available in PMC: 2016 Jun 24.
Published in final edited form as: Mod Pathol. 2015 May 29;28(8):1023–1032. doi: 10.1038/modpathol.2015.60

Figure 1.

Figure 1

(a) Case no.1. Hematoxylin & eosin. Superficial squamous cell carcinoma with focal transition to neuroendocrine carcinoma, within basal layers of the epidermis, and within the dermis of tangientially sectioned dermal papillae. (b) Case no. 2. Hematoxylin & eosin stain showing well-differentiated islands of squamous cell carcinoma abutting small islands and cords of neuroendocrine tumor. (c) Case no.3. Hematoxylin & eosin stain. Poorly differentiated small round blue cell tumor with squamous islands. (d) Case no. 5. Hematoxylin & eosin stain shows the small cell tumor transitioning into keratinizing squamous eddies.