preferred_name: Ampulla of Vater Enterochromaffin Cell Serotonin-Producing Neuroendocrine Tumor
preferred_name_lc: ampulla of vater enterochromaffin cell serotonin-producing neuroendocrine tumor
label: Enterochromaffin Cell Serotonin-Producing Neuroendocrine Tumor of the Ampullary Region
label_lc: enterochromaffin cell serotonin-producing neuroendocrine tumor of the ampullary region