UNASSIGNED: A 68-year-old @entity1 was referred to our hospital because of @entity158 . Contrast enhanced computed tomography showed a low density mass with delayed contrast effects as well as para-aortic node swelling with homogenous contrast effects. Histological examination of specimens obtained by endoscopic ultrasound fine needle aspiration revealed a @entity788 (NET) G2, according to the World Health Organization 2010 classification, and lymph node @entity3 . Distal pancreatectomy and lymph node dissection were performed. On histological examination, the @entity5 showed well-differentiated morphology with an organoid pattern. The Ki67 labeling index was 21.6  %, and the mitotic count was 25/10 high power fields. As mentioned above, we made a final diagnosis of the lesion as "NET G3," because the @entity5 presented with well-differentiated morphology. Chemotherapy with @entity2239 was administered. Liver @entity3 occurred 11  months after the first operation, and a partial hepatectomy was performed. Histological findings were similar to those of the first operation. Herein we present a case of @entity788 with a high proliferative rate referred to as "NET G3," and review the relevant literature.

@entity5 G3: a XXXX with a high proliferative rate.

@entity1 :: ('9606', 'Species') :: ['man'] @entity788 :: ('MESH:D010190', 'Disease') :: ['pancreatic well-differentiated neuroendocrine tumor', 'pancreatic neuroendocrine tumor'] @entity5 :: ('MESH:D009369', 'Disease') :: ['tumor'] @entity2239 :: ('MESH:C107135', 'Chemical') :: ['Everolimus'] @entity3 :: ('MESH:D009362', 'Disease') :: ['metastasis'] @entity158 :: ('MESH:D010146', 'Disease') :: ['left upper quadrant pain']
@entity788 :: (MESH:D010190,Disease) :: ['pancreatic well-differentiated neuroendocrine tumor']
