Peer-reviewed veterinary case report
Dog with unusual bone tumor on head seen in CT scan
By Fikse, Kalie et al.·Published in Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association·2025·Department of Clinical Sciences, United States·View original on PubMed →
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Original publication title: Imaging Diagnosis: Atypical CT Appearance of a Multilobular Osteochondrosarcoma in a Dog.
- Species:
- dog
Plain-English summary
A 9-year-old female spayed boxer was brought to the vet because of a noticeable mass on her head. Tests showed that the mass was a type of cancer called multilobular osteochondrosarcoma, which affects bone and cartilage. Unfortunately, the cancer had spread, and a postmortem examination revealed a tumor in her lungs as well. This case highlights a unique appearance of this type of cancer in dogs, which can be challenging to diagnose.
People also search for: dog head mass · boxer cancer symptoms · multilobular osteochondrosarcoma treatment
Abstract
A 9-year-old female spayed boxer presented for a dorsal cranial mass. Cytology diagnosed a sarcoma. Contrast-enhanced computed tomography (CT) of the head revealed a symmetrical, soft tissue attenuating mass with subtle mineralization and a contrast-enhancing capsule at the dorsal calvarium. There was adjacent frontal bone lysis and contrast enhancement of the parietal lobe. This supported a sarcoma of bone or cartilage origin. Postmortem examination additionally revealed a pulmonary tumor embolus. A final diagnosis of grade III multilobular osteochondrosarcoma (MLO) was made. This is the first study describing a poorly mineralized, encapsulated MLO in a dog and supports a periosteal origin.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/40937966/