Peer-reviewed veterinary case report
Dog with growing eye bulge diagnosed with rare muscle tumor
By Joong-Hyun Song et al.·Published in Veterinary Sciences·2020·Institute of Animal Medicine, College of Veterinary Medicine, Gyeongsang National University, Jinju 52828, Korea, CH·View original on DOAJ →
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Original publication title: Primary Retrobulbar Leiomyosarcoma in a Dog: A Case Report
- Species:
- dog
Plain-English summary
A 2-year-old female Mongrel dog was brought in because her left eye was bulging out and there was swelling around it for the past two months. Tests showed that she had a rare type of cancer called retrobulbar leiomyosarcoma, which is a tumor that developed in the tissues behind her eye. Imaging scans revealed that the tumor was large and had spread into nearby areas, including the nasal cavity and brain. Unfortunately, due to the aggressive nature of this tumor, treatment options may be limited, and the prognosis can be serious.
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Abstract
A 2-year-old female Mongrel dog weighing 3.12 kg presented with a 2-month history of progressive exophthalmos of the left eye and periorbital swelling. Fine-needle aspiration cytology of the affected tissue revealed atypical cells of suspected malignant mesenchymal tumor origin. Computed tomography and magnetic resonance imaging revealed an ill-demarcated soft tissue mass in the left retrobulbar space extending into the nasal cavity and into the frontal lobes of the brain with destruction of the adjacent cribriform plate and the basisphenoid bone. Histopathological features of the tumor were consistent with the diagnosis of undifferentiated sarcoma. The tumor cells were immunoreactive for vimentin, smooth muscle actin, and desmin and negative for S100. These findings were mostly consistent with leiomyosarcoma arising from the smooth muscle on the retrobulbar tissues. Primary retrobulbar leiomyosarcoma is an extremely rare tumor in dogs. To expand our knowledge of retrobulbar leiomyosarcoma in dogs, we have described its clinical, diagnostic imaging, histopathological, and immunohistochemical characteristics in a dog.
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Search related cases →Original publication on DOAJ: https://doi.org/10.3390/vetsci7040145