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The incidence of small (≤2 cm), non-functioning pancreatic neuroendocrine tumors (NF-pNETs) increased in the last decades. Before making appropriate strategy for patients with NF-pNETs ≤2 cm, pathological confirmation is vital. Incidentally diagnosed, sporadic small NF-pNETs may bring aggressive behavior and poor prognosis, such as extrapancreatic extension, lymph nodal metastasis, distant metastasis and recurrence, even causing disease-related death. Understanding and formulating an appropriate strategy for the patients with sporadic small, non-functioning pancreatic neuroendocrine tumors have been controversial for some time. Although several studies have reported that patients with NF-pNETs ≤2 cm had less rate of malignant behavior compared with larger ones (&gt;2 cm); and the surgery approach may leading to surgery-related pancreatic complications; but there is still a lack of level I evidence to convince surgeons to abandon all cases with sporadic small NF-pNETs. Based on an updated literature search and review, the members of the Chinese Study Group for Neuroendocrine Tumors (CSNET) from high-volume centers have reached a consensus on the issue of the management strategy for the sporadic small NF-pNETs. We recommend that, except for some selected patients with NF-pNETs &lt;1 cm, incidentally discovered and unacceptable surgical risks, all others with NF-pNETs ≤2 cm should undergo tumor resection with lymph node dissection or at least lymph node sampling and careful postoperative surveillance.

international journal of oncology

Surgery management for sporadic small (≤2 cm), non-functioning pancreatic neuroendocrine tumors: A consensus statement by the Chinese Study Group for Neuroendocrine Tumors (CSNET)