title: Fine needle aspiration of retroperitoneal human dirofilariasis with a pseudotumoral presentation.
abstract: The accidental finding of a pseudotumoral para-aortic mass in a 60-year-old woman led to the performance of a fine needle aspiration (FNA) biopsy under ultrasonographic guidance. The milky aspirate was centrifuged and processed as a cell block. The examination of sections confirmed the lymphatic origin of the sample, but also revealed some unexpected parasitic structures. While a complete identification could not be made on a few sections, the morphologic and epidemiologic evidence suggested Dirofilaria repens. The mass was surgically removed and identified as an adenolymphocele, which appears to be a new localization of dirofilariasis in humans. This case emphasizes the utility of FNA in diagnosing such unexpected findings without the use for exploratory surgery.
authors.affiliation: Department of Histology, Charles Nicolle Hospital, University Hospital Center, Rouen, France.
authors.forename: F
authors.initials: F
authors.lastname: Roussel
authors.forename: A
authors.initials: A
authors.lastname: Delaville
authors.forename: H
authors.initials: H
authors.lastname: Campos
authors.forename: M
authors.initials: M
authors.lastname: Benozio
authors.forename: P
authors.initials: P
authors.lastname: Brasseur
mesh_terms: D000818:Animals; D001707:Biopsy, Needle / Q000379:methods; D003937:Diagnosis, Differential; D004182:Dirofilaria / Q000302:isolation & purification; D004184:Dirofilariasis / Q000175:diagnosis / Q000473:pathology*; D005260:Female; D006801:Humans; D008875:Middle Aged; D012187:Retroperitoneal Space; D014463:Ultrasonography