title: Functioning tumors.
mesh_terms: D000328:Adult; D002395:Catecholamines / Q000378:metabolism; D002648:Child; D002675:Child, Preschool; D003967:Diarrhea / Q000209:etiology; D005260:Female; D005729:Ganglioneuroma / Q000378:metabolism*; D005768:Gastrointestinal Hormones / Q000378:metabolism*; D006801:Humans; D007223:Infant; D012186:Retroperitoneal Neoplasms / Q000378:metabolism*; D014660:Vasoactive Intestinal Peptide / Q000378:metabolism*
chemical_list: D002395:Catecholamines; D005768:Gastrointestinal Hormones; D014660:Vasoactive Intestinal Peptide