Peer-reviewed veterinary case report
Large skin cyst caused by Cercopithifilaria bainae infection in a dog
By Soares, Rodrigo Leite et al.·Published in Veterinary parasitology, regional studies and reports·2020·Faculdade de Medicina Veteriná, Brazil·View original on PubMed →
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Original publication title: Giant cutaneous cyst in a dog infected by Cercopithifilaria bainae.
- Species:
- dog
Plain-English summary
A 9-year-old male mixed-breed dog was brought to the vet with a large, soft mass about 15 cm wide on his lower back. The mass was filled with thick fluid and was not open or sticking to the skin. Tests showed that the mass was caused by a parasite called Cercopithifilaria bainae. The vet recommended surgery to remove the cyst, and after the operation, the dog was treated with ivermectin for two weeks. He made a full recovery and no longer had any issues.
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Abstract
Cercopithifilaria bainae is the most prevalent species of filarioids within the genus. This parasite localizes in the skin, sometimes causing erythematous dermatitis. Herein, the authors describe a case of giant cutaneous cyst in a dog infected by Cercopithifilaria bainae. A 9-year-old male mixed-breed dog presented to a veterinary facility in Dourados, Mato Grosso do Sul (Midwest Brazil) with a mass in the lumbosacral region. On clinical examination, the mass was observed to be approximately 15 cm in diameter with a floating consistency and conspicuous presence of viscous fluid; the lesion, however, was non-ulcerated and non-adherent. Cytological examination revealed the presence of moderate lymphocyte cellularity and foamy macrophages, erythrophagocytosis and the presence of numerous microfilariae. After morphological and molecular analysis of the 12S ribosomal RNA gene, the microfilariae were identified as C. bainae, exhibiting 99-100% identity with DNA sequences available from Genbank. Surgery was recommended and after resection of the giant cyst, the dog was treated with ivermectin for two weeks and the clinical condition was completely resolved. Based on the presence of microfilariae in the cyst fluid the role of this filarioid in the determinism of the lesion has been discussed.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/32448530/