1. Insulinoma in a Patient With Annular Pancreas
RICHARD T. SCHLINKERT, M.D. 
Mayo Clinic Proceedings 
Volume 65, Issue 4, Pages (April 1990)
DOI: /S (12)
Copyright © 1990 Mayo Foundation for Medical Education and Research Terms and Conditions

2. Fig. 1
Annular pancreas (AP) surrounding the duodenum (D) in patient with insulinoma (not shown; located at tip of forceps).
Mayo Clinic Proceedings  , DOI: ( /S (12) )
Copyright © 1990 Mayo Foundation for Medical Education and Research Terms and Conditions

3. Fig. 2
Ultrasonogram, demonstrating hypoechoic mass (large arrow at upper right) consistent with an insulinoma. Annular pancreas (AP) is shown surrounding the duodenum. No narrowing of duodenal lumen (DL) is evident.
Mayo Clinic Proceedings  , DOI: ( /S (12) )
Copyright © 1990 Mayo Foundation for Medical Education and Research Terms and Conditions