Figure 1From: Primary atypical carcinoid of the breast: A case report and brief overview of evidencePathology sections (×200) of the nodule leading the diagnosis of the atypical carcinoid of the breast: A. hematoxylin-eosin staining, B. Ki-67/MIB1 staining showing low mitotic activity, C. positive chromogranin and D. positive synaptophysin staining proving the neuroendocrine origin of the tumor.Back to article page