First case report of infiltrative fibrosarcoma and basal cell carcinoma in giant anteater (Myrmecophaga tridactyla) from Villavicencio (Colombia)
We report the clinical case of a young wild male giant anteater (Myrmecophaga tridactyla), weighting 28.4 kg, that presented multiple integumentary lesions, including one in the interdigital space of the right pelvic limb, another on the pelvis, and an open, edematous wound on the upper right hip. A...
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| Autores principales: | , , , , , |
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| Formato: | Artículo revista |
| Lenguaje: | Español |
| Publicado: |
Universidad Nacional del Nordeste
2026
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| Acceso en línea: | https://revistas.unne.edu.ar/index.php/vet/article/view/9054 |
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| Sumario: | We report the clinical case of a young wild male giant anteater (Myrmecophaga tridactyla), weighting 28.4 kg, that presented multiple integumentary lesions, including one in the interdigital space of the right pelvic limb, another on the pelvis, and an open, edematous wound on the upper right hip. An incisional biopsy was obtained from the solid fibrinous portion of the lesion and fixed in 10% buffered formalin. Treatment with trimethoprim/sulfamethazine and ketoprofen was initiated after a few days; however, the animal failed to respond and progressively developed anorexia and marked body condition loss. Clinical examination, hematological analysis, and histopathological evaluation of the biopsy revealed an infiltrative fibrosarcoma associated with the hip lesion. Given the biopsy and blood test findings, along with clinical signs such as progressive emaciation, anorexia, and poor response to therapy, euthanasia was elected. Based on the pathological examination, the most significant findings were peritonitis and the presence of a mass compatible with mesenchymal-origin neoplasm. Histopathological evaluation confirmed an undifferentiated fibrosarcoma with giant cells, basal cell carcinoma, and hemorrhagic lymphocytic peritonitis. This report represents the first description of fibrosarcoma and basal cell carcinoma in M. tridactyla in Colombia and provides an epidemiological reference within conservation medicine for future reviews, studies, and comparisons of neoplastic cases in wild species. |
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