title: Ectopic neural and neuroendocrine neoplasms.
abstract: Although neural and neuroendocrine tissues are distributed virtually ubiquitously throughout the body, the occurrence of selected neoplasms related to those lineages is extremely uncommon in some topographic sites. This review considers the clinicopathologic characteristics of heterotopic pituitary adenomas; neuroendocrine carcinomas in non-organ-based locations; ectopic (extraneuraxial) meningiomas and gliomas; visceral neuroblastic neoplasms and primitive neuroectodermal tumors; and paragangliomas arising outside the sympathoadrenal neural network. Practical approaches to differential diagnosis are emphasized.
authors.affiliation: Division of Surgical Pathology & Cytopathology, Department of Pathology, University of Virginia Health System, Charlottesville, VA 22908-0214, USA. mrw9c@virginia.edu
authors.forename: Mark R
authors.initials: MR
authors.lastname: Wick
authors.forename: Oscar
authors.initials: O
authors.lastname: Nappi
mesh_terms: D014408:Biomarkers, Tumor / Q000032:analysis; D003937:Diagnosis, Differential; D006801:Humans; D009380:Neoplasms, Nerve Tissue / Q000737:chemistry / Q000473:pathology*; D018241:Neuroectodermal Tumors, Primitive, Peripheral / Q000737:chemistry / Q000473:pathology*; D018358:Neuroendocrine Tumors / Q000737:chemistry / Q000473:pathology*
chemical_list: D014408:Biomarkers, Tumor