title: Paraganglioma presenting with marked proteinuria: a case report.
abstract: Paragangliomas are rare neuroendocrine tumors that arise from sympathetic and parasympathetic paraganglia. In children, most of them are functional tumors. Presenting symptoms such as sustained or paroxysmal elevations in blood pressure, headache, sweating, and palpitations are related to catecholamine hypersecretion. A previously healthy 8-year-old boy presented with marked proteinuria, hypertension, and heart murmur. Imaging revealed an 81×43×45 mm sized solid mass extending from right retroaortic area to left suprarenal region. Measurements of catecholamines suggested the diagnosis of paraganglioma. Pathologic examination confirmed the diagnosis. Complete tumor resection was performed. Proteinuria, hypertension, and cardiac signs resolved after surgery. Proteinuria has been described as a rare manifestation of paragangliomas in adult patients. This is the first case of a paraganglioma presenting with massive proteinuria in a child.
authors.affiliation: Departments of *Pediatric Hematology Oncology †Pathology, SB Ankara Children's Hematology Oncology Education and Research Hospital ‡Department of Pediatric Surgery, Başkent University Faculty of Medicine, Ankara, Turkey.
authors.forename: Suna
authors.initials: S
authors.lastname: Emir
authors.forename: Hacı A
authors.initials: HA
authors.lastname: Demir
authors.forename: Burcu
authors.initials: B
authors.lastname: Güven
authors.forename: Ayper
authors.initials: A
authors.lastname: Kaçar
authors.forename: İbrahim
authors.initials: İ
authors.lastname: Ötkün
mesh_terms: D000008:Abdominal Neoplasms / Q000150:complications* / Q000175:diagnosis* / Q000601:surgery; D002648:Child; D006801:Humans; D008297:Male; D010235:Paraganglioma / Q000150:complications* / Q000175:diagnosis* / Q000601:surgery; D011507:Proteinuria / Q000209:etiology*; D012720:Severity of Illness Index