Fine needle aspiration of retroperitoneal human dirofilariasis with a pseudotumoral presentation.
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.
Roussel
F
F
Department of Histology, Charles Nicolle Hospital, University Hospital Center, Rouen, France.
Delaville
A
A
Campos
H
H
Benozio
M
M
Brasseur
P
P
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