Peer-reviewed veterinary case report
Tumors spreading after surgery in dogs and cats
By Gilson, S D & Stone, E A·Published in Journal of the American Veterinary Medical Association·1990·Department of Companion Animal and Special Species Medicine·View original on PubMed →
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Original publication title: Surgically induced tumor seeding in eight dogs and two cats.
Plain-English summary
In a study involving eight dogs and two cats, researchers found that some pets developed new tumors after surgery to remove a similar type of tumor. These new tumors, known as surgically induced tumor seeding, were confirmed through tests and appeared in unusual locations. Most of the animals had highly aggressive tumors, and the new growths showed up anywhere from 2 to 30 weeks after the initial surgery, with an average of about 6 weeks. Unfortunately, the survival time after the surgery varied widely, but most of the pets either died or had to be put to sleep due to these new tumors.
Abstract
Surgically induced tumor seeding was diagnosed in 8 dogs and 2 cats. All animals had histologic confirmation of neoplasia in an unusual location or pattern, and a history of surgical manipulation of a similar histologic-type tumor at the site of seeding. Highly malignant carcinomas (8/10 animals) were the most common tumor type. Seeding occurred secondary to a variety of surgical procedures and in the face of various adjuvant therapies. Seeded tumors were recognized from 2 to 30 weeks after the causal procedure (median, 6 weeks). Survival times after the causal procedure ranged from 15 to 131 weeks (median, 45 weeks) and 8 of 10 animals died or were euthanatized because of seeded tumors.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/2351601/