title: Endoscopic demonstration and diagnostic biopsy of Zollinger-Ellison tumor of the stomach.
mesh_terms: D001706:Biopsy; D005260:Female; D005773:Gastroscopy; D006801:Humans; D008875:Middle Aged; D013274:Stomach Neoplasms / Q000175:diagnosis* / Q000473:pathology; D015043:Zollinger-Ellison Syndrome / Q000175:diagnosis* / Q000473:pathology