Fig. 3From: A dural metastatic small cell carcinoma of the gallbladder as the first manifestation: a case reportSmall cell carcinoma (a) showing a trabecular and rosetta arrangement of small cells with extension necrosis (hematoxylin and eosin staining). The following positive immunostains were helpful for diagnosis b synaptophysin (SYN), c chromogranin A (CGA), d neural cell adhesion molecule (N-CAM), e cytokeratin AE/AE3, and f Ki-67Back to article page