A 35-year-old woman with epigastric pain, which did not improve on ranitidine, is found to have a nonhealing pyloric channel ulcer on upper endoscopy. Her serum calcium level is 12 mg/dL.
Watery diarrhea, hypokalemia, and achlorhydria (WDHA) syndrome Somatostatinoma Multiple endocrine neoplasia type-1 (MEN)-1 MEN-2A