Endocrine Pancreas ResectionSpecimen: Head of pancreas Body of pancreas Tail of pancreas Duodenum Stomach Common bile duct Gallbladder Spleen Adjacent large vessels Portal vein Superior mesenteric vein Other large vessel (specify): Other (specify): Not specified Cannot be determined Procedure Type: Excisional biopsy (enucleation) Pancreaticoduodenectomy (Whipple resection), partial pancreatectomy Pancreaticoduodenectomy (Whipple resection), total pancreatectomy Partial pancreatectomy, pancreatic body Partial pancreatectomy, pancreatic tail Other (specify): Not specified Tumor Site: Pancreatic head Uncinate process Pancreatic body Pancreatic tail Other (specify): Cannot be determined Not specified Tumor Size: Greatest dimension (cm): (specify size of largest tumor if multiple tumors are present) Additional dimensions: cm Cannot be determined (see Comment) Tumor Focality: Unifocal Multifocal (specify number of tumors:): tumor foci Cannot be determined Not specified Histologic Type: Well-differentiated endocrine neoplasm Poorly differentiated endocrine carcinoma Small cell carcinoma Large cell endocrine carcinoma Other (specify): Carcinoma, type cannot be determined World Health Organization Classification: Well-differentiated endocrine tumor, benign behavior Well-differentiated endocrine tumor, uncertain behavior Well-differentiated endocrine carcinoma Poorly differentiated endocrine carcinoma Functional Type: Cannot be assessed Pancreatic endocrine tumor, functional (correlation with clinical syndrome and elevated serum levels of hormone product) Insulin-producing (insulinoma) Glucagon-producing (glucagonoma) Somatostatin-producing (somatostatinoma) Gastrin-producing (gastrinoma) Vasoactive intestinal polypeptide (VIP)-producing (VIP-oma) Other (specify): Pancreatic endocrine tumor, nonfunctional Pancreatic endocrine tumor, functional status unknown Mitotic Activity: Not applicable Less than 2 mitoses/10 high-power fields: mitoses/10 HPF Greater than or equal to 2 mitoses/10 HPF to 10 mitoses/10 HPF: mitoses/10 HPF Greater than 10 mitoses per 10 HPF: mitoses/10 HPF Cannot be determined Ki67 labeling index: <2% Ki67-positive cells 3%-20% Ki67-positive cells >20% Ki67-positive cells Tumor Necrosis: Not identified Present Not applicable Cannot be determined Microscopic Tumor Extension: Cannot be determined No evidence of primary tumor Tumor is confined to pancreas Tumor invades ampulla of Vater Tumor invades common bile duct Tumor invades duodenal wall Tumor invades peripancreatic soft tissues Tumor invades other adjacent organs or structures (specify): Margins: Cannot be assessed Margins uninvolved by tumor. Distance to closest margin: mm at Margin(s) involved by tumor: Uncinate process (retroperitoneal) margin (nonperitonealized surface of the uncinate process) Distal pancreatic margin Common bile duct margin Proximal pancreatic margin Other (specify): Tumor involves posterior retroperitoneal surface of pancreas Lymph-Vascular Invasion: Not identified Present Indeterminate Perineural Invasion: Not identified Present Indeterminate Pathologic Staging (pTNM) m (multiple primary tumors) r (recurrent) y (post-treatment) Primary Tumor (pT): pTX: Cannot be assessed pT0: No evidence of primary tumor pT1: Tumor limited to the pancreas, 2 cm or less in greatest dimension pT2: Tumor limited to the pancreas, more than 2 cm in greatest dimension pT3: Tumor extends beyond the pancreas but without involvement of the celiac axis or the superior mesenteric artery pT4: Tumor involves the celiac axis or the superior mesenteric artery Regional Lymph Nodes (pN): pNX: Cannot be assessed pN0: No regional lymph node metastasis ( 0 / ) pN1: Regional lymph node metastasis ( / ) Distant Metastasis (pM): Not applicable pM1: Distant metastasis at Additional Pathologic Findings: None identified Chronic pancreatitis Acute pancreatitis Adenomatosis (multiple endocrine tumors, each less than 5 mm in greatest dimension) Other (specify): Ancillary Studies: Disease History: von Hippel-Lindau disease Multiple endocrine neoplasia type 1 Familial pancreatic cancer syndrome Hypoglycemic syndrome Necrolytic migratory erythema Watery diarrhea Hypergastrinemia Zollinger-Ellison syndrome Other (specify): Not specified Comments: