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Updated: Jan 28, 2026

The In ovo CAM-assay as a Xenograft Model for Sarcoma

The In ovo CAM-assay as a Xenograft Model for Sarcoma

Published on: July 17, 2013

Gossypiboma-associated sarcomas in five cases.

G Thomas¹, L Doeven¹, A Guillén¹

¹Department of Clinical Science and Services, The Royal Veterinary College, Hatfield, UK.

The Journal of Small Animal Practice

|January 26, 2026

Summary

This summary is machine-generated.

Gossypiboma-associated sarcomas are rare, aggressive tumors in pets, often developing years after retained surgical gauze. Prevention through meticulous surgical counts and radiopaque materials is crucial for better outcomes.

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Area of Science:

Veterinary Oncology
Surgical Pathology
Comparative Medicine

Background:

Gossypiboma, a retained surgical sponge, can lead to rare but aggressive sarcomas in animals.
These neoplasms pose a diagnostic and therapeutic challenge in veterinary medicine.

Purpose of the Study:

To describe the clinical presentation, treatment strategies, and outcomes of dogs and cats diagnosed with gossypiboma-associated sarcoma.
To highlight the importance of surgical safety protocols in preventing such iatrogenic complications.

Main Methods:

A retrospective study involving veterinary referral centers across multiple continents.
Inclusion criteria required comprehensive clinical records, histopathology, and follow-up data for cases of gossypiboma-associated sarcoma.
Medical records were searched for canine and feline patients with confirmed gossypiboma-associated sarcoma.

Main Results:

Five cases (four dogs, one cat) were identified, with sarcomas developing 1054–2201 days post-ovariohysterectomy or caesarean section.
Clinical signs included anorexia, lethargy, vomiting, and abdominal pain; histopathology revealed various sarcoma types with foreign material.
Metastasis was common, and survival times were generally poor, ranging from 13 to 196 days post-diagnosis.

Conclusions:

Gossypiboma-associated sarcomas are rare, aggressive tumors with a poor prognosis in companion animals.
Strict adherence to surgical safety measures, including radiopaque gauze, checklists, and accurate counts, is essential to prevent retained surgical sponges and subsequent neoplasms.