OBJECTIVEOnly a few studies have evaluated the long-term effects of nonalcoholic fatty liver disease (NAFLD) on type 2 diabetes mellitus (T2DM), and none have examined whether NAFLD improvement reduces T2DM incidence. We investigated the association between NAFLD improvement and T2DM incidence. RESEARCH DESIGN AND METHODSBetween 2000 and 2012, 4,604 participants who underwent a health check twice with >10 years between were enrolled. Exclusion criteria were positive hepatitis B surface antigen, positive hepatitis C antibody, ethanol intake >20 g/day, and diabetes. The 3,074 eligible participants were divided into an NAFLD group (n = 728) and a non-NAFLD group (n = 2,346) according to ultrasonography-detected fatty liver. The NAFLD group was categorized into an improved group (n = 110) and a sustained NAFLD group (n = 618) based on fatty liver disappearance at the second visit. Incident T2DM odds ratios (ORs) were estimated by logistic regression models adjusted for age, sex, BMI, impaired fasting glucose, family history of diabetes, dyslipidemia, hypertension, and physical exercise. RESULTST2DM occurred in 117 participants (16.1%) in the NAFLD group and 72 (3.1%) in the non-NAFLD group. NAFLD at baseline was associated with T2DM incidence (multivariate OR 2.37 [95% CI 1.60-3.52]). T2DM occurred in 7 participants (6.4%) in the improved group and in 110 (17.8%) in the sustained NAFLD group. NAFLD improvement was associated with reduced T2DM incidence (multivariate OR 0.27 [95% CI 0.12-0.61]). CONCLUSIONS

Background and Objectives The correlation between various levels of perineural invasion by pancreatic carcinoma and the patient's prognosis has never been cleared. The authors carried out a histopathologic study of resected pancreatic carcinoma to elucidate the significance of a new histologic finding concerning perineural invasion, which we designated “ntrapancreatic, extratumoral perineural invasion (nex),” and also to determine its predictive value for prognoses of patients after surgical removal of the tumor. Methods We investigated 90 patients with pancreatic adenocarcinoma who had undergone pancreatic resection. The prognoses of all patients were explored, and correlations between survival and pathologic factors were statistically examined for neural invasion. Results Nex was found in more than 50% of resected pancreases. A statistically significant association was found between the presence of nex and the grade of intrapancreatic neural invasion or the presence of extrapancreatic neural plexus invasion. Nex was also found to be associated with patient survival after removal of the tumor. Conclusions Nex appears to be an element predicting pancreatic cancer infiltration to the extrapancreatic nerve plexus and also to be a factor influencing postoperative survival of patients with pancreatic carcinoma. J. Surg. Oncol. 1997;65:164–170. © 1997 Wiley‐Liss, Inc.

Fatty pancreas was not independently associated with future T2DM.

Fat accumulation in the liver, pancreas, skeletal muscle, and visceral bed relates to type-2 diabetes (T2D). However, the distribution of fat among these compartments is heterogenous and it is unclear whether specific distribution patterns indicate high T2D risk. We therefore investigated fat-distribution patterns and their link to future T2D. From 2168 individuals without diabetes who underwent computed tomography in Japan, this case-cohort study included 658 randomly selected individuals and 146 incident cases of T2D over 6 years of follow-up. Using data-driven analysis (k-means) based on fat content in the liver, pancreas, muscle, and visceral bed, we identified four fat-distribution clusters: Hepatic steatosis, Pancreatic steatosis, Trunk myosteatosis, and Steatopenia. Compared with the Steatopenia cluster, the adjusted hazard ratios (95% CIs) for incident T2D were 4.02 (2.27-7.12) for the Hepatic steatosis cluster, 3.38 (1.65-6.91) for the Pancreatic steatosis cluster, and 1.95 (1.07-3.54) for the Trunk myosteatosis cluster. The clusters were replicated in 319 German individuals without diabetes who underwent magnetic resonance imaging and metabolic phenotyping. The distribution of AUC-glucose across the four clusters found in Germany was similar to the distribution of T2D risk across the four clusters in Japan. Insulin sensitivity and insulin secretion differed across the four clusters. Thus, we identified patterns of fat distribution with different T2D risks presumably due to differences in insulin sensitivity and insulin secretion.

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