Pediatric Radiology

, Volume 42, Issue 4, pp 486–487 | Cite as

Filarial dance—sonographic sign of filarial infection

  • Gurucharan S. ShettyEmail author
  • R. S. Solanki
  • Shailesh M. Prabhu
  • Amit Jawa
Case Report


A 17-year-old boy presented with a 3-month history of swelling and vague pain in the scrotum. US revealed multiple anechoic cyst-like lesions in the body of left epididymis. These cysts showed tubular echogenic internal structures with peculiar twirling motion. This was recognised as the sonographic filarial dance-sign of live adult filarial worms. The boy subsequently underwent needle aspiration of the lesion, which microscopically demonstrated microfilaria of Wuchereria bancrofti. Our report includes an online video clip that will help familiarise readers with the filarial dance.


Adult Worm Lymphatic Filariasis Filariasis Epididymitis Orchitis 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Supplementary material

Clip 1

A 17-year-old boy presented with scrotal swelling. The peculiar random twirling motion of the live adult filarial worms can be seen: the filarial dance sign (MPG 2236 kb)


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Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  • Gurucharan S. Shetty
    • 1
    Email author
  • R. S. Solanki
    • 1
  • Shailesh M. Prabhu
    • 1
  • Amit Jawa
    • 1
  1. 1.Department of RadiologyLady Hardinge Medical CollegeNew DelhiIndia

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