Complete Remission Upon Peptide Receptor Radionuclide Therapy in a G2 Pancreatic Neuroendocrine Tumor.

We report the case of a 52-year-old man affected with a metastasized neuroendocrine tumor (G2) of the pancreas. After surgical removal, follow-up imaging 36 months later revealed somatostatin receptor-positive liver lesions. Because of disease progression under cold somatostatin analogs 6 months later, peptide receptor radionuclide therapy was performed, that induced complete remission (CR), supporting the notion that "hot" somatostatin analogs can achieve CR even in patients affected with pancreatic G2 neuroendocrine tumor. Of note, such cases exhibiting CR upon peptide receptor radionuclide therapy are extremely rare and further investigations may pool those exceptional treatment responders.