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Washington University Experience | NEOPLASMS (METASTASES) | Microscopic | 67B3 Metastasis, lung small cell CA (Case 67) SYN - Copy

Tumor cells were immunoreactive for synaptophysin (67B3,4) and TTF-1 (67B5). Taken together, a diagnosis of small cell neuroendocrine carcinoma is most compatible with the morphologic and immunohistochemical findings.

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