Revista Mexicana de Oftalmología

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VOLUME 95 , ISSUE 6E ( November-December, 2021 ) > List of Articles


Ocular toxocariasis simulating a retinal hamartoma. A case report

Keywords : Toxocariasis, Hamartoma, Diagnosis, Retinoblastoma

Citation Information : Ocular toxocariasis simulating a retinal hamartoma. A case report. 2021; 95 (6E):277-280.

DOI: 10.24875/RMOE.M21000198

License: CC BY-NC-ND 4.0

Published Online: 05-11-2021

Copyright Statement:  Copyright © 2020 Sociedad Mexicana de Oftalmología. Published by Permanyer


Case report: The case concerns a 6 year-old girl who refers a 6-month history of decreased visual acuity in the right eye. The only relevant data during interrogation was contact with dogs. The initial diagnosis was a retinal hamartoma. The patient was studied with complete blood count, blood chemistry, magnetic resonance imaging, and A and B-scan ultrasonography. Anti-Toxocara canis antibodies were measured (IgG 24.5 U, normal range 0-9 U; IgM and IgA < 2.5 U within normal range). Discussion: After a comprehensive evaluation that ruled out a retinoblastoma, along with laboratory tests and imaging findings, we established a diagnosis of a central granuloma with centripetal vitreoretinal contraction caused by ocular toxocariasis.

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  1. Ávila M, Isaac D. Helminthic disease. En: Schachat AP, editor. Ryan's Retina. 6th ed. Philadelphia: Elsevier; 2018. p. 1685-99.
  2. Infectious Ocular Inflammatory Disease. En: American Academy of Ophthalmology. Intraocular Inflammation and Uveitis, Section 9. Ed. 2014- 2015. American Academy of Ophthalmology; 2014. p. 235-7.
  3. Kwon J, Lee SY, Jee D, Cho YK. Prognosis for ocular toxocariasis according to granuloma location. PLoS One. 2018;13:1-8.
  4. Sánchez-T JE, López-G JP, González-N M, Villaseca-D E, Manieu-M D, Roizen-B A, et al. Prevalence of ocular lesions in children seropositive to Toxocara canis. Rev Chil Infect. 2011;28:431-4.
  5. Tinoco-Gracia L, Barreras-Serrano A, López-Valencia G, Tamayo-Sosa AR, Quiroz-Romero H, Melgarejo T. Seroprevalence of larva migrans of Toxocara canis and evaluation of associated risk factors among children in a Mexico-United States border region. Int J Appl Res Vet M. 2008;6:130-6.
  6. Ahn SJ, Ryoo NK, Woo SJ. Ocular toxocariasis: clinical features, diagnosis treatment and prevention. Asia Pac Allergy. 2014;4:134-41.
  7. Cruess AF, Sharma S. Tuberous sclerosis and the eye. En: Schachat AP, editor. Ryan's Retina. 6th ed. Philadelphia: Elsevier; 2018. p. 2438-45.
  8. Cohen VM, Shields CL, Furuta M, Shields JA. Vitreous seeding from retinal astrocytoma in three cases. Retina. 2008;28:884-8.
  9. Shields JA, Eagle RC Jr, Shields CL, Marr BP. Aggressive retinal astrocytomas in four patients with tuberous sclerosis complex. Trans Am Ophthalmol Soc. 2004;102:139-48.
  10. Shields CL, Thangappan A, Hartzell K, Valente P, Pirondini C, Shields JA. Combined hamartoma of the retina and retinal pigment epithelium in 77 cases visual outcome based on macular versus extramacular tumor location. Ophthalmology. 2008;115:2246-52.e3.
  11. Visliel J, Karakas S. University of Iowa Health Care. Eye, 2015. (Última actualización el 25 de febrero de 2015.) Disponible en:
  12. Seong S, Moon D, Lee DK, Kim HE, Oh HS, Kim SH, et al. A case of ocular toxocariasis successfully treated with albendazole and triamcinolon. Korean J Parasitol. 2014;52:537-40.
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