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Representative photomicrographs of the MiNEN. (a) Infiltrating squamous cell carcinoma (*) and neuroendocrine carcinoma (†) adjacent to each other (× 20). (b) Squamous component with keratinization (× 100). (c) Neuroendocrine component with necrosis (× 200). (d) Adenocarcinoma component with gland formation (× 20). H&E stain. MiNEN: mixed neuroendocrine non-endocrine neoplasm; H&E: hematoxylin and eosin.
