Peer-reviewed veterinary case report
CT Features of an Extraskeletal Osteosarcoma Associated With a Retained Surgical Sponge in a Dog.
- Journal:
- Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association
- Year:
- 2026
- Authors:
- Yamashita, Kota et al.
- Affiliation:
- Daktari Animal Hospital Tokyo Medical Center · Japan
- Species:
- dog
Abstract
An 8-year-old neutered female Labradoodle presented with acute restlessness and inability to stand. Point-of-care ultrasound revealed a large abdominal mass, prompting further imaging. Computed tomography (CT) demonstrated a mass with marked mineralization, a thick, enhancing rim, and signs of intra-abdominal dissemination. Surgical excision of the mass was performed, and histopathology confirmed extraskeletal osteosarcoma (ESOSA) secondary to a retained surgical sponge (gossypiboma). Four months post-surgery, the dog developed pulmonary metastases and was euthanized. This report is the first to describe CT findings of ESOSA secondary to a retained surgical sponge in a dog.
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Search related cases →Original publication: https://pubmed.ncbi.nlm.nih.gov/42059303/