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Case Report


Surgical management of massive hepatic cholangiocarcinoma with suspected pulmonary metastasis in a Dachshund: A palliative approach

Alexandra Moura Fraga, Leticia Lopes Carrijo, Mariana Moreira Lopes, Washington Cleyber De Oliveira Júnior, Hellen Nayara Silva Oliveira, Luiz Augusto De Souza, Vitor Eduardo Arantes De Barros, Iago Martins Oliveira.


Abstract
Background:
Hepatic cholangiocarcinoma is a malignant neoplasm originating from the epithelium of the bile ducts, characterized by infiltrative growth and high metastatic potential. It presents with nonspecific clinical signs, such as abdominal distension, weight loss, and lethargy, which makes early diagnosis difficult.

Case Description:
A 13-year-old spayed female Dachshund dog was presented with abdominal distension. Physical examination revealed marked abdominal pain and abdominal enlargement. Ultrasonography identified a large cavitary structure in the liver, and thoracic
radiography revealed a pulmonary mass. Computed tomography confirmed a massive hepatic neoplastic process without invasion of the caudal vena cava or portal vein. Exploratory celiotomy followed by hepatic lobectomy of the left lateral lobe was performed with palliative intent, aiming to achieve significant clinical improvement and enhanced quality of life. Histopathological examination confirmed a massive-pattern hepatic
cholangiocarcinoma. Three months after surgery, follow-up imaging examinations revealed a new hepatic mass, without progression of the pulmonary mass. After six months, the patient developed clinical deterioration compatible with paraneoplastic syndrome and died under palliative care.

Conclusion:
Diagnostic imaging and histopathological findings contributed to the characterization of massive cystic hepatic cholangiocarcinoma in this dog. However, the advanced stage of the disease at diagnosis and the lack of characterization of the
pulmonary lesion limited complete disease assessment. Further studies and additional case reports are warranted.

Key words: Bile duct; Dog; Liver; Neoplasm.


 
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How to Cite this Article
Pubmed Style

Fraga AM, Carrijo LL, Lopes MM, Júnior WCDO, Oliveira HNS, Souza LAD, Barros VEAD, Oliveira IM. Surgical management of massive hepatic cholangiocarcinoma with suspected pulmonary metastasis in a Dachshund: A palliative approach. Open Vet. J.. 2026; 16(8): 5563-5571. doi:10.5455/OVJ.2026.v16.i8.50

Web Style

Fraga AM, Carrijo LL, Lopes MM, Júnior WCDO, Oliveira HNS, Souza LAD, Barros VEAD, Oliveira IM. Surgical management of massive hepatic cholangiocarcinoma with suspected pulmonary metastasis in a Dachshund: A palliative approach. https://www.openveterinaryjournal.com/?mno=302562 [Access: August 08, 2026]. doi:10.5455/OVJ.2026.v16.i8.50

AMA (American Medical Association) Style

Fraga AM, Carrijo LL, Lopes MM, Júnior WCDO, Oliveira HNS, Souza LAD, Barros VEAD, Oliveira IM. Surgical management of massive hepatic cholangiocarcinoma with suspected pulmonary metastasis in a Dachshund: A palliative approach. Open Vet. J.. 2026; 16(8): 5563-5571. doi:10.5455/OVJ.2026.v16.i8.50


Vancouver/ICMJE Style

Fraga AM, Carrijo LL, Lopes MM, Júnior WCDO, Oliveira HNS, Souza LAD, Barros VEAD, Oliveira IM. Surgical management of massive hepatic cholangiocarcinoma with suspected pulmonary metastasis in a Dachshund: A palliative approach. Open Vet. J.. (2026), [cited August 08, 2026]; 16(8): 5563-5571. doi:10.5455/OVJ.2026.v16.i8.50


Harvard Style

Fraga, A. M., Carrijo, . L. L., Lopes, . M. M., Júnior, . W. C. D. O., Oliveira, . H. N. S., Souza, . L. A. D., Barros, . V. E. A. D. & Oliveira, . I. M. (2026) Surgical management of massive hepatic cholangiocarcinoma with suspected pulmonary metastasis in a Dachshund: A palliative approach. Open Vet. J., 16 (8), 5563-5571. doi:10.5455/OVJ.2026.v16.i8.50


Turabian Style

Fraga, Alexandra Moura, Leticia Lopes Carrijo, Mariana Moreira Lopes, Washington Cleyber De Oliveira Júnior, Hellen Nayara Silva Oliveira, Luiz Augusto De Souza, Vitor Eduardo Arantes De Barros, and Iago Martins Oliveira. 2026. Surgical management of massive hepatic cholangiocarcinoma with suspected pulmonary metastasis in a Dachshund: A palliative approach. Open Veterinary Journal, 16 (8), 5563-5571. doi:10.5455/OVJ.2026.v16.i8.50


Chicago Style

Fraga, Alexandra Moura, Leticia Lopes Carrijo, Mariana Moreira Lopes, Washington Cleyber De Oliveira Júnior, Hellen Nayara Silva Oliveira, Luiz Augusto De Souza, Vitor Eduardo Arantes De Barros, and Iago Martins Oliveira. "Surgical management of massive hepatic cholangiocarcinoma with suspected pulmonary metastasis in a Dachshund: A palliative approach." Open Veterinary Journal 16 (2026), 5563-5571. doi:10.5455/OVJ.2026.v16.i8.50


MLA (The Modern Language Association) Style

Fraga, Alexandra Moura, Leticia Lopes Carrijo, Mariana Moreira Lopes, Washington Cleyber De Oliveira Júnior, Hellen Nayara Silva Oliveira, Luiz Augusto De Souza, Vitor Eduardo Arantes De Barros, and Iago Martins Oliveira. "Surgical management of massive hepatic cholangiocarcinoma with suspected pulmonary metastasis in a Dachshund: A palliative approach." Open Veterinary Journal 16.8 (2026), 5563-5571. Print. doi:10.5455/OVJ.2026.v16.i8.50


APA (American Psychological Association) Style

Fraga, A. M., Carrijo, . L. L., Lopes, . M. M., Júnior, . W. C. D. O., Oliveira, . H. N. S., Souza, . L. A. D., Barros, . V. E. A. D. & Oliveira, . I. M. (2026) Surgical management of massive hepatic cholangiocarcinoma with suspected pulmonary metastasis in a Dachshund: A palliative approach. Open Veterinary Journal, 16 (8), 5563-5571. doi:10.5455/OVJ.2026.v16.i8.50


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