title: Incidental detection of microfilariae in aspirates from Ewing's sarcoma of bone.
abstract: Microfilariae have been reported as coincidental findings with various neoplasms. We present a case in which microfilariae were encountered in fine-needle aspiration (FNA) smears from a 10-yr-old boy who presented with a lytic lesion in the diaphysis of the right tibial bone. Stained aspirates from the swelling were composed of a dispersed population of small round cells with scanty to vacuolated cytoplasm. Two sheathed microfilariae with several nuclei and cephalic and caudal clearing were identified. A diagnosis of Ewing's sarcoma with presence of microfilariae of Wuchereria bancrofti was made. The diagnosis of Ewing's sarcoma was confirmed on histopathology.
authors.affiliation: Department of Pathology, Lady Hardinge Medical College and Associated Hospitals, New Delhi, India.
authors.forename: Charanjeet
authors.initials: C
authors.lastname: Ahluwalia
authors.forename: Monisha
authors.initials: M
authors.lastname: Choudhury
authors.forename: P
authors.initials: P
authors.lastname: Bajaj
mesh_terms: D000818:Animals; D044963:Biopsy, Fine-Needle; D001859:Bone Neoplasms / Q000469:parasitology / Q000473:pathology*; D002648:Child; D005368:Filariasis / Q000150:complications / Q000473:pathology*; D006801:Humans; D008297:Male; D008842:Microfilariae / Q000166:cytology / Q000302:isolation & purification* / Q000502:physiology; D012512:Sarcoma, Ewing / Q000469:parasitology / Q000473:pathology*; D013977:Tibia / Q000469:parasitology / Q000473:pathology; D014958:Wuchereria bancrofti / Q000166:cytology / Q000302:isolation & purification*