Eye

Retina

Visceral larva migrans



Last author update: 1 February 2014
Last staff update: 13 June 2022

Copyright: 2004-2022, PathologyOutlines.com, Inc.

PubMed Search: Visceral larva migrans retina

Nat Pernick, M.D.
Page views in 2021: 212
Page views in 2022 to date: 171
Cite this page: Pernick N. Visceral larva migrans. PathologyOutlines.com website. https://www.pathologyoutlines.com/topic/eyeretinaviscerallarvamigrans.html. Accessed December 6th, 2022.
Definition / general
  • A type of nematodiasis (parasitic disease)
  • Somewhat common in US and Great Britain
  • Usually produced by Toxocara canis in children ages 3 - 14 years without systemic disease
  • Single migrating larva enters eye hematogenously and rests in vitreous or inner surface of retina with accompanying acute and chronic inflammatory cells and intense eosinophilia
  • Late changes are scarring, retinal detachment and leukokoria, simulating retinoblastoma
  • Dead larvae may cause minute granulomas, found with serial sectioning
Gross images

AFIP images
Missing Image

White sclerotic vitreous mass

Microscopic (histologic) images

AFIP images
Missing Image

Vitreous mass contains collagen (trichrome stain)

Missing Image

Acidophilic material and scattered eosinophils

Back to top
Image 01 Image 02