Neuroendocrine Carcinoma of the Stomach: A Case Study
Figure 2
Histological findings of the tumor (x 400). The tumor was uniform in shape and arranged in small microtubular structures (rosette-like arrangement) to form solid nests, with medium-sized, round-to-cuboid-shaped tumor cells. The tumor cells exhibited intense mitosis greater than 2/HPF (hematoxylin and eosin, (a)). Immunohistochemical staining showed that it was positive for synaptophysin (b) and chromogranin A (c). The Ki-67 labeling index was 70–80% (d).
