title: Spontaneous retroperitoneal abscess as the first clinical manifestation of a non-functioning retroperitoneal paraganglioma.
abstract: We demonstrate a novel clinical presentation of paraganglioma not described in the literature. The paraganglioma is a catecholamine secretory, or non-secretory, neuroendocrine tumour that derives from chromaffin cells. Its frequency, with regard to pheochromocytoma, is low, and the abdominal region is the most frequent localisation site, followed in importance by the cervical region. We report the case of a 54-year-old woman diagnosed with a retroperitoneal abscess; after drainage of the lesion, samples indicated necrotic paraganglioma cells, so it was decided to conduct a survey to determine catecholamine levels in urine, and carry out a MIBG gammagraphy, which described a non-functioning retroperitoneal paraganglioma that underwent surgical removal. There was no residual disease after 3-month follow-up.
authors.affiliation: Urology Department, San Cecilio University Hospital, Granada, Spain. arrabalp@ono.com
authors.forename: Miguel Angel
authors.initials: MA
authors.lastname: Arrabal-Polo
authors.forename: Miguel
authors.initials: M
authors.lastname: Arrabal-Martin
authors.forename: Victor Manuel
authors.initials: VM
authors.lastname: Lopez-Leon
authors.forename: Felix
authors.initials: F
authors.lastname: Abad-Menor
authors.forename: Francisco
authors.initials: F
authors.lastname: Valle-Diaz de la Guardia
authors.forename: Jose Luis
authors.initials: JL
authors.lastname: Mijan-Ortiz
authors.forename: Armando
authors.initials: A
authors.lastname: Zuluaga-Gomez
mesh_terms: D018784:Abdominal Abscess / Q000175:diagnosis / Q000209:etiology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D010235:Paraganglioma / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D012186:Retroperitoneal Neoplasms / Q000150:complications* / Q000175:diagnosis / Q000601:surgery; D012187:Retroperitoneal Space