Multiple Endocrine Neoplasia Type 1 with Concomitant Existence of Malignant Insulinoma: A Rare Finding

Figure 4

Well-differentiated neuroendocrine tumor; tumor cells arranged in trabeculae, cords, and lobules with vascular septa. These cells show mild nuclear atypia, fine stippled chromatin, inconspicuous nucleoli, and moderate amount of eosinophilic granular cytoplasm. Mitosis is infrequent (H&E X100).