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Surgical Case Reports
Fig. 1 | Surgical Case Reports

Fig. 1

From: Pathological complete response of initially unresectable multiple liver metastases achieved using combined peptide receptor radionuclide therapy and somatostatin analogs following pancreatic neuroendocrine tumor resection: a case report

Fig. 1

Primary pancreatic neuroendocrine tumor. a Contrast-enhanced computed tomography demonstrated a hypo-attenuated mass in the pancreatic head (arrowheads). b Gross appearance of the specimen obtained by pancreatoduodenectomy. c On the cut section, a whitish-yellow nodular tumor (arrowheads) appeared in the pancreatic parenchyma and invaded the duodenal wall. d–f Histology (d) and immunohistochemistry (e, f) of the resected specimen in medium-power views. Atypical polygonal proliferating tumor cells arranged in trabecular or nested patterns (hematoxylin and eosin staining) (d). Most tumor cells expressed chromogranin A (e), and their Ki67 labeling index was approximately 10% (f)

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