Papp J, Korányi L, Bielawski J
Endoscopy. 1977 May;8(2):97-9. doi: 10.1055/s-0028-1098386.
The case of a 26-year-old male with insulinoma is presented. An insulin secreting tumour was indicated by laboratory data. The tumour was accurately localized by endoscopic retrograde pancreatography, as verified by subsequent surgery.