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Histological images. A: Lymph node metastasis of a high differentiated neuroendocrine carcinoma of the pancreas showing a trabecular pattern (HE, × 120); B The cells are positive for synaptophysin (× 120); C: High membranous expression of somatostatin-receptor SSTR-2 (× 120); D: Macrophages (CD68-positive) as a sign for tumor necrosis after PRRT (× 120).
