EURORAD ESR

Case 11860

Annular pancreas: a case of intermittent duodenal obstruction in an adult

Author(s)
Pedro Paixão1, Inês Santiago1

1Radiology Department,
Hospital Prof. Doutor Fernando Fonseca,
EPE, Amadora, Portugal
 
Patient
male, 23 year(s)
 
 
  • Figure 1
    Abdominal ultrasound
     

    Pancreatic tissue (short arrows) surrounding the duodenum (long arrow).

     
    Area of Interest: Pancreas; Imaging Technique: Ultrasound; Procedure: Diagnostic procedure; Special Focus: Obstruction / Occlusion;

    A slightly different plane from Figure 1a.

     
    Area of Interest: Pancreas; Imaging Technique: Ultrasound; Procedure: Diagnostic procedure; Special Focus: Obstruction / Occlusion;

    Duodenal lumen measurement (Lumen A), with surrounding pancreas shown to good advantage (P).

     
    Area of Interest: Pancreas; Imaging Technique: Ultrasound; Procedure: Diagnostic procedure; Special Focus: Obstruction / Occlusion;
     
     
  • Figure 2
    Abdominal contrast-enhanced CT
     

    Complete, circumferential encasement of the 2nd duodenal portion by pancreatic tissue.

     
    Area of Interest: Pancreas; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Obstruction / Occlusion;

    Complete, circumferential encasement of the 2nd duodenal portion by pancreatic tissue.

     
    Area of Interest: Pancreas; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Obstruction / Occlusion;

    Complete, circumferential encasement of the 2nd duodenal portion by pancreatic tissue.

     
    Area of Interest: Pancreas; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Obstruction / Occlusion;

    Complete, circumferential encasement of the 2nd duodenal portion by pancreatic tissue.

     
    Area of Interest: Pancreas; Imaging Technique: CT; Procedure: Diagnostic procedure; Special Focus: Obstruction / Occlusion;
     
     
  • Figure 3
    Schematic showing the development of the biliary tract

    Inferior bud (yellow) develops into ventral bud of pancreas. During 6th gestational week, choledochus and ventral bud of pancreas rotate 180° clockwise around the duodenum and come to lie in their definitive positions.

     
    Area of Interest: Biliary Tract / Gallbladder; Pancreas; Imaging Technique: Image manipulation / Reconstruction; Procedure: Diagnostic procedure; Special Focus: Congenital;
     
     
Pancreatic tissue (short arrows) surrounding the duodenum (long arrow).
 
A slightly different plane from Figure 1a.
 
Duodenal lumen measurement (Lumen A), with surrounding pancreas shown to good advantage (P).
 
Complete, circumferential encasement of the 2nd duodenal portion by pancreatic tissue.
 
Complete, circumferential encasement of the 2nd duodenal portion by pancreatic tissue.
 
Complete, circumferential encasement of the 2nd duodenal portion by pancreatic tissue.
 
Complete, circumferential encasement of the 2nd duodenal portion by pancreatic tissue.
 
Inferior bud (yellow) develops into ventral bud of pancreas. During 6th gestational week, choledochus and ventral bud of pancreas rotate 180° clockwise around the duodenum and come to lie in their definitive positions.
 
 
 
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