label: enterochromaffin cell serotonin-producing pancreatic neuroendocrine tumor
label_lc: enterochromaffin cell serotonin-producing pancreatic neuroendocrine tumor
description: "A usually slow-growing, grade 1 pancreatic neuroendocrine tumor that secretes serotonin. When it metastasizes to the liver, it produces the clinical symptoms of the carcinoid syndrome."