Two cases of ectopic dirofilariasis by Dirofilaria immitis in subconjunctival and subcutaneous tissues in dogs |
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| Institution: | 1. College of Veterinary Medicine, Chungbuk National University, Cheongju, Republic of Korea;2. The Hill Veterinary Medical Center, Seoul, Republic of Korea;1. Infectious Diseases Department, Centro Hospitalar Universitário de São João, Porto, Portugal;2. Faculty of Medicine, University of Porto, Porto, Portugal;3. General Surgery Department, Centro Hospitalar Universitário de São João, Porto, Portugal;1. Facultad de Ciencias Exactas, Naturales y Agropecuarias, Universidad de Santander, Grupo de Investigación en Ciencias Agropecuarias-GICA, Campus lagos del Cacique, CP 680006 Bucaramanga, Colombia;2. Escuela Medicina Veterinaria y Zootecnia, Instituto Universitario de la Paz, Barrancabermeja CP 687037, Colombia;1. Departamento de Sanidad Animal, Facultad de Veterinaria, Campus de Excelencia Internacional Regional \"Campus Mare Nostrum\", Universidad de Murcia, 30100 Murcia, Spain;2. Departamento de Anatomía y Anatomía Patológica Comparadas, Facultad de Veterinaria, Campus de Excelencia Internacional Regional \"Campus Mare Nostrum\", Universidad de Murcia, 30100 Murcia, Spain;3. Centro de Recuperación de Fauna Silvestre \"El Valle\", Ctra. Subida del Valle 62, 30150, La Alberca, Murcia, Spain |
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| Abstract: | We report two cases of ectopic dirofilariasis caused by Dirofilaria immitis in the subconjunctival and subcutaneous tissues of dogs. In Case 1, a 10-year-old female poodle suffered from a subconjunctival mass in the left eye that was refractory to antibiotic and steroid treatments. The mass was removed surgically, and a whitish nematode was identified within the mass. In Case 2, a stray 3-year-old male greyhound was rescued and transferred to a local veterinary hospital. During care, two nematodes were observed on the left hind paw and leg. The observed worms were not typical of D. immitis; therefore, the species was confirmed using molecular methods. Phylogenetic analysis revealed high genetic identity with other previously reported D. immitis strain. Subcutaneous and subconjunctival dirofilariasis have been mainly caused by D. repens. To the best of our knowledge, this is the first report of subconjunctival ectopic dirofilariasis by D. immitis in a dog, and the first report of subcutaneous localization in Korea. Therefore, in endemic regions, ectopic dirofilariasis caused by D. immitis should be considered as a differential diagnosis in subconjunctival and subcutaneous masses. |
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