25 March 2026
: Case report 
Adult-Onset Nesidioblastosis: A Challenging Diagnosis Revealed by Endoscopic Ultrasonography
Challenging differential diagnosis, Rare disease
Kristína Cmarková AEF 1, Peter Uhrík ADE 2*, Roman Kyčina EF 1, Lenka Nosáková DEG 2, Miroslav Pindura DEF 1, Martin Grajciar AEF 1, Michal Kalman DE 3, Peter Bánovčin EFG 2, Juraj Miklušica DE 1DOI: 10.12659/AJCR.951251
Am J Case Rep 2026; 27:e951251
Table 1 Laboratory examination.
| Plasma glucose concentration during fasting test | Results of our patient | Reference range |
|---|---|---|
| Hour 0 | 4.2 mmol/L | 3.3–5.5 mmol/L |
| Hour 3 | 3.7 mmol/L | 3.3–5.5 mmol/L |
| Hour 6 | 3.4 mmol/L | 3.3–5.5 mmol/L |
| Hour 9 | 4.2 mmol/L | 3.3–5.5 mmol/L |
| Hour 12 | 3.5 mmol/L | 3.3–5.5 mmol/L |
| Hour 15 | 2.4 mmol/L | 3.3–5.5 mmol/L |
| Plasma insulin level | 3.8 ug/L | 0.8–3.85 ug/L |
| Plasma C-peptide level | 2.07 mU/L | 3–25 mU/L |