1. The role of fiberoptic endoscopy in the diagnosis and management of duodenal neoplasms

   • Arnold Wald
   • Francis D. Milligan

   Original Articles Pages: 499 - 505

2. Comparative study of secretin and Lundh tests

   • Klaus Gyr
   • Naurang M. Agrawal
   • Robert G. Font

   Original Articles Pages: 506 - 512

3. Variability of serum gastrin levels in Zollinger-Ellison syndrome

   • Kevin J. Ivey
   • J. Hansky

   Original Articles Pages: 513 - 517

4. Thymus-derived lymphocytes in type B acute viral hepatitis and healthy carriers of hepatitis B surface antigen (HB_sAg)

   • Robert C. Wicks
   • Peter F. Kohler
   • John W. Singleton

   Original Articles Pages: 518 - 522

5. Hormonal control of gastrointestinal motility

   • R. F. Harvey

   Progress Report Pages: 523 - 539

6. Frontiers in inflammatory bowel disease

   • Roy G. Shorter
   • David A. E. Shephard
   • D. W. Watson

   Special Article Pages: 540 - 571

7. Introduction to a new section of gastrointestinal roentgenology

   • Richard L. Wechsler
   • Wylie J. Dodds

   Editorial Pages: 572 - 572

8. Bleeding Meckel's diverticulum diagnosed by arteriography and radioisotope imaging

   • David Eisenberg
   • Charles E. Sherwood

   Forums in Gastrointestinal Roentgenology Pages: 573 - 576

9. Primary adenocarcinoma of the esophagus arising in a columnar-lined esophagus

   • Alfred E. Stillman
   • Jeffrey I. Selwyn

   Case Report Pages: 577 - 582

10. Silent pancreatic pseudocyst

    • James M. Falko
    • Hagop S. Mekhjian
    • Fred B. Thomas

    Case Report Pages: 583 - 587

11. Syphilitic gastropathy

    • Terence N. Reisman
    • F. Lynn Leverett
    • Martin H. Kalser

    Case Report Pages: 588 - 593

12. Comparative gastroenterology

    • Alfred M. Merritt

    Report Pages: 594 - 598

13. Correction

    • Charles N. Carney
    • Franz Goldstein

    Letters to the Editor Pages: 599 - 599

14. Postvagotomy insulin infusion test

    • William H. Hall
    • J. H. Baron
    • J. Spencer

    Letters to the Editor Pages: 599 - 601

15. News and notices

    News Pages: 602 - 602