Zollinger-Ellison Syndrome

**Definition:** A syndrome that is characterized by the triad of severe PEPTIC ULCER, hypersecretion of GASTRIC ACID, and GASTRIN-producing tumors of the PANCREAS or other tissue (GASTRINOMA). This syndrome may be sporadic or be associated with MULTIPLE ENDOCRINE NEOPLASIA TYPE 1.

**Tree numbers:** - C04.730.713.988 - C06.301.371.883 - C06.405.249.883 - C06.405.469.275.800.924 - C06.405.469.965 - C06.405.748.586.924 - C06.405.748.947