Table 1 Immunochemical characteristics of the two components of the tumor.
From: Primary small-cell neuroendocrine carcinoma of the duodenum – a case report and review of literature
Synaptophysin | AE1/AE3 | Vimentin | CD56 | chromogranin A | MIB1 | ||
|---|---|---|---|---|---|---|---|
(A) | Round component | ++ | ++ | ++ | + | - | 25% |
(B) | Crescent component | + | - | - | - | - | 50% |