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Brought to you by Diabetes & Primary Care, this interactive case study takes you through the basic considerations of identifying and managing pancreatogenic (type 3c) diabetes. The case illustrates the need to undertake a careful review of the patient’s history in determining an underlying cause of diabetes, and to be open to a change in diagnosis and management. Type 3c diabetes is frequently misclassified (often as type 2 diabetes) and so prevalence is underestimated in practice. By actively engaging with this case history, you should feel more confident and empowered to manage effectively such a problem in the future.

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10. Shivaprasad C, Aiswarya A, Kejal S et al (2021) Comparison of CGM-derived measures of between pancreatogenic diabetes and type 2 diabetes. J Diabetes Sci Technol 15: 134–40

11. NICE (2021) Suspected cancer: recognition and referral (NG12).

12. Duggan SN, Ewald N, Kelleher L et al (2017) The nutritional management of type 3c (pancreatogenic) diabetes in chronic pancreatitis. Eur J Clin Nutr 71: 3–8

13. Wang Z, Lai ST, Xie L et al (2014) Metformin is associated with reduced risk of pancreatic cancer in patients with type 2 diabetes mellitus: A systematic review and meta-analysis. Diabetes Res Clin Pract 106: 19–25

14. Moran A, Brunzell C, Cohen RC et al (2010) CFRD Guidelines Committee. Clinical care guidelines for cystic fibrosis-related diabetes: a position statement of the American Diabetes Association and a clinical practice guideline of the Cystic Fibrosis Foundation, endorsed by the Pediatric Endocrine Society. Diabetes Care 33: 2697–708

15. Diabetes UK (2018) Fact file 36: Type 3c diabetes.

16. TREND Diabetes (2020) Diabetes and pancreatic exocrine insufficiency (patient leaflet).

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