title: Gangliocytic paraganglioma of the duodenum: an immunocytochemical study.
abstract: Two cases of duodenal paragangioliomas that were studied using light microscopy and immunocytochemical methods are reported. The tumors showed immunoreactivity to somatostatin, cholecystokinin, calcitonin, gastrin, vasoactive intestinal polypeptide, serotonin, met-enkephalin, leu-enkephalin, and substance P. The similarities of duodenal paragangioliomas to other neoplasms occurring in similar anatomic locations are outlined.
mesh_terms: D000328:Adult; D002116:Calcitonin / Q000378:metabolism; D002766:Cholecystokinin / Q000378:metabolism; D004379:Duodenal Neoplasms / Q000378:metabolism* / Q000473:pathology; D004745:Enkephalins / Q000378:metabolism; D005768:Gastrointestinal Hormones / Q000378:metabolism; D006801:Humans; D008297:Male; D008875:Middle Aged; D010235:Paraganglioma / Q000378:metabolism* / Q000473:pathology; D013004:Somatostatin / Q000378:metabolism
chemical_list: D004745:Enkephalins; D005768:Gastrointestinal Hormones; D013004:Somatostatin; D002116:Calcitonin; D002766:Cholecystokinin