title: Pulmonary gangliocytic paraganglioma: case report and comparative immunohistochemical study of related neuroendocrine neoplasms.
abstract: The authors report a case of gangliocytic paraganglioma of the lung, which has not yet been described in a pulmonary neoplasm. A 75-year-old man underwent right middle and lower lobe lobectomy. A slightly yellowish mass was located at the bifurcation between the lower and middle lobe bronchus, protruding into the truncus intermedius. The neoplastic cells were composed of three cellular elements: uniform endocrine cells in a Zellballen arrangement, large ganglion-like cells within the nests of endocrine cells, and spindle-shaped cells arranged in streams to surround the nests. Each component exhibited the characteristic immunohistochemical properties, which were similar to those of the corresponding neuroendocrine neoplasms: Endocrine cells were positive for CAM 5.2, chromogranin A, and synaptophysin, like carcinoid tumor; ganglion-like cells were positive only for neurofilament, like ganglioneuroma; and spindle-shaped cells were positive for neurofilament and S-100 protein, like paraganglioma. These results agreed with those in gangliocytic paraganglioma of the duodenum. Pulmonary gangliocytic paraganglioma is similar to that in the duodenum, and is a hamartomatous proliferation of epithelial endocrine and neuronal cells of the bronchus.
authors.affiliation: Department of Pathology, Jichi Medical School, Tochigi, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Hironaka
authors.forename: M
authors.initials: M
authors.lastname: Fukayama
authors.forename: N
authors.initials: N
authors.lastname: Takayashiki
authors.forename: K
authors.initials: K
authors.lastname: Saito
authors.forename: Y
authors.initials: Y
authors.lastname: Sohara
authors.forename: N
authors.initials: N
authors.lastname: Funata
mesh_terms: D000368:Aged; D015415:Biomarkers; D014408:Biomarkers, Tumor / Q000032:analysis; D053379:Chromogranin A; D002864:Chromogranins / Q000032:analysis; D006801:Humans; D007124:Immunoenzyme Techniques; D007633:Keratins / Q000032:analysis; D008175:Lung Neoplasms / Q000737:chemistry / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D008297:Male; D009363:Neoplasm Proteins / Q000032:analysis; D016900:Neurofilament Proteins / Q000032:analysis; D010235:Paraganglioma / Q000737:chemistry / Q000000981:diagnostic imaging / Q000473:pathology* / Q000601:surgery; D013902:Radiography, Thoracic; D009418:S100 Proteins / Q000032:analysis; D016708:Synaptophysin / Q000032:analysis; D014057:Tomography, X-Ray Computed
chemical_list: D015415:Biomarkers; D014408:Biomarkers, Tumor; C400901:CAM 5.2 antigen; D053379:Chromogranin A; D002864:Chromogranins; D009363:Neoplasm Proteins; D016900:Neurofilament Proteins; D009418:S100 Proteins; D016708:Synaptophysin; C051774:neurofilament protein H; D007633:Keratins