PMID- 27684993 OWN - NLM STAT- MEDLINE DCOM- 20170719 LR - 20181113 IS - 1532-0979 (Electronic) IS - 0147-5185 (Print) IS - 0147-5185 (Linking) VI - 41 IP - 1 DP - 2017 Jan TI - Mesenteric Tumor Deposits in Midgut Small Intestinal Neuroendocrine Tumors Are a Stronger Indicator Than Lymph Node Metastasis for Liver Metastasis and Poor Prognosis. PG - 128-133 AB - Mesenteric tumor deposits (MTDs) are not included in the American Joint Committee on Cancer (AJCC) staging system for midgut small intestinal neuroendocrine tumors (NETs). We examined the prognostic significance of MTDs associated with midgut NETs. Hematoxylin and eosin slides from 132 resected jejunal/ileal NETs were reviewed for AJCC tumor stage, lymph node (LN) metastasis, MTDs, and hepatic metastases. MTDs were defined as discrete irregular mesenteric tumor nodules discontinuous from the primary tumor. Clinical or pathologic evidence of metastases and survival data were abstracted from electronic medical records. The cohort included 72 male and 60 female patients with a median age of 60 years. LN metastasis, MTDs, and liver metastasis were present in 80%, 68%, and 58% of patients, respectively. Female sex and presence of MTDs were independent predictors of liver metastasis. The odds ratio for hepatic metastasis in the presence of MTDs was 16.68 (95% confidence interval [CI], 4.66-59.73) and 0.81 (95% CI, 0.20-3.26) for LN metastasis. Age, MTDs, and hepatic metastasis were associated with disease-specific survival (DSS) in univariate analysis. Primary tumor histologic grade, pT3/T4 stage, and LN metastasis were not associated with DSS. Multivariate analysis of liver metastasis-free survival stratified by tumor grade showed that MTDs were associated with adverse outcomes. The hazard ratio for MTDs was 4.58 (95% CI, 1.89-11.11), compared with 0.98 (95% CI, 0.47-2.05) for LN metastasis. MTDs, but not LN metastasis, in midgut NETs are a strong predictor for hepatic metastasis and are associated with poor DSS. FAU - Fata, Cynthia R AU - Fata CR AD - *Department of Pathology, Microbiology, and Immunology, Vanderbilt University Medical Center, Nashville, TN daggerDepartment of Pathology, University of Rochester Medical Center, Rochester, NY double daggerDepartment of Surgery, Rocky Mountain Cancer Centers, Denver, CO. FAU - Gonzalez, Raul S AU - Gonzalez RS FAU - Liu, Eric AU - Liu E FAU - Cates, Justin M AU - Cates JM FAU - Shi, Chanjuan AU - Shi C LA - eng GR - P30 DK058404/DK/NIDDK NIH HHS/United States GR - P50 CA095103/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - United States TA - Am J Surg Pathol JT - The American journal of surgical pathology JID - 7707904 SB - IM MH - Adult MH - Aged MH - Aged, 80 and over MH - Disease-Free Survival MH - Female MH - Humans MH - Intestinal Neoplasms/mortality/*pathology MH - Intestine, Small/pathology MH - Kaplan-Meier Estimate MH - Liver Neoplasms/mortality/secondary MH - Lymphatic Metastasis/pathology MH - Male MH - Mesentery/*pathology MH - Middle Aged MH - Neuroendocrine Tumors/mortality/*pathology MH - Prognosis MH - Proportional Hazards Models MH - Young Adult PMC - PMC5159256 MID - NIHMS813979 COIS- The authors have no conflicts of interest EDAT- 2016/09/30 06:00 MHDA- 2017/07/20 06:00 PMCR- 2018/01/01 CRDT- 2016/09/30 06:00 PHST- 2016/09/30 06:00 [pubmed] PHST- 2017/07/20 06:00 [medline] PHST- 2016/09/30 06:00 [entrez] PHST- 2018/01/01 00:00 [pmc-release] AID - 10.1097/PAS.0000000000000751 [doi] PST - ppublish SO - Am J Surg Pathol. 2017 Jan;41(1):128-133. doi: 10.1097/PAS.0000000000000751.