Abstract
This case report describes the use of an autologous vaginal tunic as a reinforcement material in the repair of an inguinal hernia in a 10.5-year-old intact male mixed-breed dog, presented to the Veterinary Hospital of the Federal University of Western Bahia with a 10-month history of swelling in the right lateral region of the penis. The patient was diagnosed with prostatic hyperplasia associated with an inguinal hernia. Surgical treatment consisted of inguinal herniorrhaphy; given the muscle weakness observed intraoperatively, the inguinal wall was reinforced using a double-layered autologous vaginal tunic obtained following bilateral orchiectomy. The procedure resulted in successful recovery, with no postoperative complications, demonstrating tissue stability and excellent anatomical integration. One year and four months later, the animal was euthanized due to complications arising from multicentric lymphoma. Necropsy revealed firm integration between the vaginal tunic and adjacent tissues, with the abdominal cavity preserved in its entirety. Histopathological analysis confirmed the preservation of muscle, adipose, and connective tissues, along with the absence of inflammation, granulation tissue, hyperplasia, or fibrosis. As this is a single case report the present findings do not allow for generalizations. However, they suggest that the autologous vaginal tunic may represent a viable, safe, and cost-effective alternative as a reinforcement material in canine inguinal herniorrhaphy.
References
Borges, T. B., Nascimento, B. M., Leitzke, A. V. S., Marcal, M. B., Trentim, M. S., Broch, N. R. A., & Quessada, A. M. (2022). Hérnia inguinal em cão macho corrigida com retalho do Mesórquio / Inguinal hernia in a male dog corrected with a Mesorchial flap. Brazilian Journal of Development, 8(4), 31784-31794. https://doi.org/10.34117/bjdv8n4-591.
Canellas, A. C. C., Moraes, T. A., Araújo, P. S., Lancetta, C. F. F., Degani, V. A. N., & Ferreira, M. L. G. (2017). Emprego de túnica albugínea heteróloga ovina como reforço de parede abdominal em ratos / Employment of ovine heterologous tunic albuginea as abdominal wall reinforcement in rats. Pesquisa Veterinária Brasileira, 37(10), 1108-1112. https://doi.org/10.1590/s0100-736x2017001000011.
Campos, J. F., Vieira, G. C., Bezerril, J. C., Sasahara, T. H. C., Moraes, P. C., & Leal, L. M. (2021). Use of canine vaginal tunic preserved in 98% glycerin as a biological dressing in the treatment of skin wounds produced in Wistar rats. Brazilian Journal of Veterinary Science, 28(1), 23-29. https://doi.org/10.4322/rbcv.2021.005.
Checchinato, D., Andrade, G. S., Muzzi, L. A. L., Oliveira, N. P., Bragetto, D. C., Rocha, C. M. B. M., Chaves, G. V., & Pereira, A. P. T. (2024). Polypropylene mesh in the repair of abdominal hernia in a dog: Case report. Observatory of Latin American Economy, 22(4), e4319. https://doi.org/10.55905/oelv22n4-168.
Faria, B. G. O., Caires, L. P., Uribe, A. A., Mercês, G. W. M. S., Muramoto, C., & Costa Neto, J. M. (2020). Autologous vaginal tunic for perineal herniorrhaphy in dogs. Brazilian Archives of Veterinary Medicine and Animal Science, 72(2), 323-331. https://doi.org/10.1590/1678-4162-10520.
Faria, B. G. O., Martins Filho, E. P., Conceição, D. G., Dórea Neto, F. A., Quessada, A. M., Carneiro, R. S., & Costa Neto, J. M. (2016). Pathophysiology and treatment of iatrogenic abdominal hernia in a feline: Case report. Brazilian Journal of Veterinary Medicine, 38(1), 2-7. https://bjvm.org.br/BJVM/article/view/282/851
Fossum, T. W. (2019). Surgery of the abdominal cavity. In T. W. Fossum (Eds.), Small animal surgery (5th ed.). Elsevier.
Guerios, S., Orms, K., & Serrano, M. A. (2020). Autologous tunica vaginalis graft to repair perineal hernia in shelter dogs. Veterinary and Animal Science, 9, 100122. https://doi.org/10.1016/j.vas.2020.100122. PMid:32734123.
Junqueira, L. C., & Carneiro, J. (2018). Basic histology: Text and atlas (14th ed.). Guanabara Koogan.
Oliveira, G. S., Martins, M. F. F., Cunha, R. O., Silva, M. H. D., Corrêa, A. L., Marinho, P. V. T., & Portugal, E. S. (2023). Spermatic cord strangulation secondary to inguinal hernia in a dog: Case report. Josif, 15(3), 1-4. https://josif.ifsuldeminas.edu.br/ojs/index.php/anais/article/view/1676
Oliveira, V. C. F., & Silva, H. O. (2021). Inguinal hernia in an adult dog: Case report. Revista Agroveterinária. Negócios e Tecnologias, 6(2), 103-109. https://revista.fcc.edu.br/index.php/agroveterinaria/article/view/111
Philip, L. M., Nair, S. S., & Venugopal, S. (2019). Inguinal hernia and its management in dogs: A review of eight cases. Indian Journal of Canine Practice, 11, 171-174. https://www.researchgate.net/publication/360845533
Saigali, P. H. F., Jardim, P. H., Jacobyet, F. C., Barbosa, C. F., Silva, J., & Rondon, E. S. (2017). Perineal herniorrhaphy reinforced with tunica vaginalis graft: Case report. Pet Tutorial Education Program, 10(1), 131-133. https://famez.ufms.br/files/2015/09/HERNIORRAFIA-PERINEAL-COM-REFOR%C3%87O-DE-ENXERTO-COM-T%C3%9ANICA-VAGINAL-RELATO-DE-CASO-1.pdf
Tanaka, S., Asano, K., Yamaya, Y., Sato, T., Tsumagari, S., & Nagaoka, K. (2004). Reconstructive surgery of the pelvic diaphragm using the tunica vaginalis communis in a dog with perineal hernia. Nippon Juishikai Zasshi, 57(7), 451-454. https://doi.org/10.12935/jvma1951.57.451.
Vasconcelos, B. M. A., Freitas, D. M., Moreira, P. P., Teixeira Amado Jorge, A. L., Piva Maria, B., Ângelo Benato, T., Rodrigues Rosado, I., & Leonel Alves, E. G. (2020). Inguinal hernia with splenic incarceration in a male dog. Acta Scientiae Veterinariae, 48(510), 1-8. https://doi.org/10.22456/1679-9216.102634.
Vicenti, F. A. M., Laus, J. L., Costa Neto, J. M., Taglieri, C., Campos, C. F., Jorge, A. T., Ferreira, A. L., & Fantinatti, A. P. (2002). Use of an allogenous tunica vaginalis conserved in 98% glycerin for keratoplasty in dogs. Revista Brasileira de Ciência Veterinária, 9(3), 182-187. https://doi.org/10.4322/rbcv.2015.257.

This work is licensed under a Creative Commons Attribution 4.0 International License.
Copyright (c) 2026 Milene Costa da Silva, Marcondes Pessoa de Freitas, Beatriz Barreto Gomes, Victória Ranna Dias dos Santos, Ester Morais Alves Pereira Franca, Eduardo Melo Nascimento, Karoline Pereira Silva Rodrigues, João Paulo Vitória do Nascimento, Deusdete Conceição Gomes Junior

