Radiographic findings in dogs from an endemic area for heartworm disease in the state of Rio de Janeiro
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Keywords

radiography, pulmonary artery, parasitosis, image diagnosis, heartworm disease.

How to Cite

Lima, N. da C., de Paula, M. A. S., Mattos, R. B., Soares, D. do V., Silva, G. P., & Alberigi, B. (2025). Radiographic findings in dogs from an endemic area for heartworm disease in the state of Rio de Janeiro. Brazilian Journal of Veterinary Medicine, 46, e008324. https://doi.org/10.29374/2527-2179.bjvm008324

Abstract

Canine heartworm disease causes significant pulmonary abnormalities, even in asymptomatic cases. This study aimed to compare the chest radiographs of cases infected with Dirofilaria immitis with those of heartworm-negative dogs. Fifteen animals treated at a private veterinary clinic in the municipality of Maricá, Rio de Janeiro, underwent chest radiography, regardless of their serological status, for the presence of D. immitis antigen, and none of them used preventive measures. Eight dogs tested positive for the antigens on immunochromatographic tests (8/15, 53.3%). When the radiographs of the two groups of dogs were blindly compared, the increase in the caudal pulmonary arteries showed a strong positive correlation (0.732) with infection using the Spearman correlation test. These results suggest that heartworm infection, even in the absence of clinical signs, elicits caudal lobar pulmonary artery enlargement that can be detected on radiography

https://doi.org/10.29374/2527-2179.bjvm008324
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References

Bowman, D. D., & Atkins, C. E. (2009). Heartworm biology, treatment, and control. The Veterinary Clinics of North America. Small Animal Practice, 39(6), 1127-1158, vii. http://doi.org/10.1016/j.cvsm.2009.06.003. PMid:19932367.

Cummings, M. L., & Wylie, C. E. (2019). Canine Heartworm Disease: A Review of the Radiographic Findings. The Veterinary Clinics of North America. Small Animal Practice, 49(3), 509-524.

DeFrancesco, T. C. (2009). Heartworm Disease in Dogs and Cats. Veterinary Medicine, 104(1), 16-20.

Falcón-Cordón, S., Falcón-Cordón, Y., Costa-Rodríguez, N., Matos, J. I., Montoya-Alonso, J. A., & Carretón, E. (2024). Assessment of Thoracic Radiographic Alterations in Dogs with Heartworm and Their Correlation with Pulmonary Hypertension, Pre- and Post-Adulticide Treatment. Animals (Basel), 14(17), 2551. http://doi.org/10.3390/ani14172551. PMid:39272335.

Ferreira, A. M., Netto, C. E. C., Santos-Sousa, C. A., Souza Júnior, P., Bagetti Filho, H. J. S., & Abidu-Figueiredo, M. (2024). Cardiopulmonary radiographic changes in dogs naturally infected with Dirofilaria immitis. Pesquisa Veterinária Brasileira, 44, e07466. http://doi.org/10.1590/1678-5150-pvb-7466.

Haukoos, J. S., & Lewis, R. J. (2005). Advanced statistics: Bootstrapping confidence intervals for statistics with “difficult” distributions. Academic Emergency Medicine, 12(4), 360-365. PMid:15805329.

Labarthe, N. V., Paiva, J. P., Reifur, L., Mendes-de-Almeida, F., Merlo, A., Carvalho Pinto, C. J., Juliani, P. S., de Almeida, M. A., & Alves, L. C. (2014). Updated canine infection rates for Dirofilaria immitis in areas of Brazil previously identified as having a high incidence of heartworm-infected dogs. Parasites & Vectors, 7(1), 493. http://doi.org/10.1186/s13071-014-0493-7. PMid:25376238.

Leidy, J. (1856). A synopsis of entozoa and some of their ectocongeners observed by the author. Proceedings. Academy of Natural Sciences of Philadelphia, 8, 42-58.

Maerz, I. (2020). Clinical and diagnostic imaging findings in 37 rescued dogs with heartworm disease in Germany. Veterinary Parasitology, 283, 109156. http://doi.org/10.1016/j.vetpar.2020.109156. PMid:32526608.

Sakarin, S., Rungsipipat, A., Roytrakul, S., Jaresitthikunchai, J., Phaonakrop, N., Charoenlappanit, S., Thaisakun, S., & Surachetpong, S. D. (2024). Proteomic analysis of pulmonary arteries and lung tissues from dogs affected with pulmonary hypertension secondary to degenerative mitral valve disease. PLoS One, 19(1), e0296068. http://doi.org/10.1371/journal.pone.0296068. PMid:38181036.

Scavo, N. A., Zecca, I. B., Sobotyk, C., Saleh, M. N., Lane, S. K., Olson, M. F., Hamer, S. A., Verocai, G. G., & Hamer, G. L. (2022). High prevalence of canine heartworm, Dirofilaria immitis, in pet dogs in south Texas, USA, with evidence of Aedes aegypti mosquitoes contributing to transmission. Parasites & Vectors, 15(1), 407. http://doi.org/10.1186/s13071-022-05514-1. PMid:36329477.

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Copyright (c) 2025 Nathália da Conceição Lima, Mel Andrade Souza de Paula, Rebeca Bhering Mattos, Denise do Valle Soares, Giovanna Pestana Silva, Bruno Alberigi