Peer-reviewed veterinary case report
Long-term survival of cats with nasal tumors after radiotherapy
By Mellanby, R J et al.·Published in Journal of feline medicine and surgery·2002·Queen's Veterinary School Hospital, United Kingdom·View original on PubMed →
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Original publication title: Long-term outcome of eight cats with non-lymphoproliferative nasal tumours treated by megavoltage radiotherapy.
- Species:
- cat
Plain-English summary
Eight cats with nasal tumors were treated with megavoltage radiotherapy, which involved several sessions over a few weeks. The most common type of tumor was adenocarcinoma. Most cats completed their treatment with only mild side effects, and the average survival time after treatment was about 382 days, with 63% surviving for at least a year. Unfortunately, all the cats were eventually euthanized due to either a lack of response to the treatment or tumor recurrence. This approach showed that fewer, larger doses of radiation can help manage these tumors for a longer period.
People also search for: cat nasal tumor treatment · megavoltage radiotherapy for cats · feline adenocarcinoma prognosis
Abstract
A retrospective study was undertaken to evaluate the long term survival of eight cats with non-lymphoproliferative nasal tumours treated by megavoltage radiotherapy alone. Adenocarcinoma was the most commonly diagnosed tumour. Megavoltage radiotherapy was given to eight cats in 4-6 fractions of 4-8 Gys over a 16 to 28 day period. Seven cats completed the radiotherapy schedule and only two cases developed mild acute radiotherapy side effects. Median survival time after the completion of the radiotherapy course as calculated by Kaplan-Meier survival analysis was 382 days. The 1 year survival rate was 63%. All cats were euthanased because of either a poor response to radiotherapy or recurrence of the nasal tumour. This study demonstrates that a coarse fractionation regime of megavoltage radiotherapy can provide effective long-term palliative treatment for feline nasal tumours. The coarse fractionation schedule has the advantages of requiring only four to six treatments.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/12027506/