Fig. 2From: Primary renal well-differentiated neuroendocrine tumors: report of six cases with an emphasis on the Ki-67 index and mitosisHistologic features of case with lymph node and liver metastasis. Mixed ribbon-like (a, × 200) and sheet-like (b, × 200) patterns are observed. Also many apoptotic bodies are observed (c, × 400). Synaptophysin showed diffuse positive staining (d, × 400)Back to article page