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Review
. 2016 Nov;1(3):226-237.
doi: 10.1016/S2468-1253(16)30106-6. Epub 2016 Oct 12.

Type 3c (pancreatogenic) diabetes mellitus secondary to chronic pancreatitis and pancreatic cancer

Affiliations
Review

Type 3c (pancreatogenic) diabetes mellitus secondary to chronic pancreatitis and pancreatic cancer

Phil A Hart et al. Lancet Gastroenterol Hepatol. 2016 Nov.

Abstract

Diabetes mellitus is a group of diseases defined by persistent hyperglycaemia. Type 2 diabetes, the most prevalent form, is characterised initially by impaired insulin sensitivity and subsequently by an inadequate compensatory insulin response. Diabetes can also develop as a direct consequence of other diseases, including diseases of the exocrine pancreas. Historically, diabetes due to diseases of the exocrine pancreas was described as pancreatogenic or pancreatogenous diabetes mellitus, but recent literature refers to it as type 3c diabetes. It is important to note that type 3c diabetes is not a single entity; it occurs because of a variety of exocrine pancreatic diseases with varying mechanisms of hyperglycaemia. The most commonly identified causes of type 3c diabetes are chronic pancreatitis, pancreatic ductal adenocarcinoma, haemochromatosis, cystic fibrosis, and previous pancreatic surgery. In this Review, we discuss the epidemiology, pathogenesis, and clinical relevance of type 3c diabetes secondary to chronic pancreatitis and pancreatic ductal adenocarcinoma, and highlight several important knowledge gaps.

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Conflict of interest statement

Declaration of interests

MDB has received research support outside of the submitted work from Merck & Co, Medtronic, and Dompe pharmaceuticals. STC has received research support outside of the submitted work from Sandler Kenner Foundation, and non-financial support from Kenner Family Research Fund. PAH has received honoraria from Abbvie, as well as consulting fees from KC Specialty Therapeutic. SJP has received research support outside of the submitted work from Calcimedica, and has patents licensed, issued, and pending for intellectual property that is unrelated to the submitted work. DY is consulting for Abbvie and has received royalties for UpToDate publication. DKA, DB, ZC-M, CEF, MOG, AH, MK, and YCK declare no competing interests.

Figures

Figure
Figure. Prevalence and causes of type 3c diabetes mellitus
(A) Prevalence of type 3c diabetes in a cohort of 1868 participants with diabetes. (B) Frequency of different causes in the 117 participants with type 3c diabetes. Reproduced from Ewald and colleagues, by permission of John Wiley and Sons.

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