Fig. 3 | Modern Pathology

Fig. 3

From: Insulinoma-associated protein 1 (INSM1) is a sensitive and highly specific marker of neuroendocrine differentiation in primary lung neoplasms: an immunohistochemical study of 345 cases, including 292 whole-tissue sections

Fig. 3

INSM1 staining in a non-neuroendocrine neoplasm. a Adenocarcinoma, solid predominant (whole-tissue section of resected tumor, hematoxylin–eosin). The tumor was diffusely positive for TTF-1 and napsin A (not shown). b Focal strong INSM1 positivity. This was the only positive focus in the entire tumor. Both images are at original magnification ×200

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