What question did this study set out to answer?

To evaluate the safety and clinical efficacy of a hypofractionated electron beam radiation therapy protocol for feline facial squamous cell carcinoma.

January 20, 2010Journal of Feline Medicine and SurgeryOpen Access

Radiation therapy for feline cutaneous squamous cell carcinoma using a hypofractionated protocol

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Authors

SCSimone Carvalho dos Santos Cunha LCLuı́s Alfredo Vidal de Carvalho PCP. Canary

Discussion

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Overview

Clinical study demonstrates a 52% response rate in cats with facial squamous cell carcinoma, indicating hypofractionated radiation is safe but requires technical refinement.

Key Points

To evaluate the safety and clinical efficacy of a hypofractionated electron beam radiation therapy protocol for feline facial squamous cell carcinoma.
Treated 25 histologically confirmed facial squamous cell carcinomas across 15 cats using a linear accelerator delivering 4 or 6 MeV electron beams with a 5 or 10 mm bolus.
Administered a hypofractionated protocol consisting of four weekly fractions of 7.6 to 10 Gy each.
Classified tumors by clinical stage (44% T4, 16% T3, 8% T2, 32% T1) and evaluated treatment-induced toxicities according to Veterinary Radiation Therapy Oncology Group criteria.
Achieved an overall response rate of 52%, comprising 40% complete response, 12% partial response, and 48% no response across all lesions.
Complete remission reached 62.5% in T1 tumors, with an overall mean disease-free time of 271 days and mean overall survival of 224 days.
Toxicity was confined to mild-to-moderate skin erythema, epilation, ulceration, and conjunctivitis, confirming protocol safety despite lower overall efficacy compared to alternative schedules.

Cite This Study

Cunha et al. (2010) studied this question.

synapsesocial.com/papers/6a717ee1f44fa9f079df4957 https://doi.org/10.1016/j.jfms.2009.10.005

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January 20, 2010Journal of Feline Medicine and SurgeryOpen Access

Radiation therapy for feline cutaneous squamous cell carcinoma using a hypofractionated protocol

View Full Paper

Ask AI

Bookmark

Authors

SCSimone Carvalho dos Santos Cunha LCLuı́s Alfredo Vidal de Carvalho PCP. Canary

Discussion

Member takes

Overview

Clinical study demonstrates a 52% response rate in cats with facial squamous cell carcinoma, indicating hypofractionated radiation is safe but requires technical refinement.

Key Points

To evaluate the safety and clinical efficacy of a hypofractionated electron beam radiation therapy protocol for feline facial squamous cell carcinoma.
Treated 25 histologically confirmed facial squamous cell carcinomas across 15 cats using a linear accelerator delivering 4 or 6 MeV electron beams with a 5 or 10 mm bolus.
Administered a hypofractionated protocol consisting of four weekly fractions of 7.6 to 10 Gy each.
Classified tumors by clinical stage (44% T4, 16% T3, 8% T2, 32% T1) and evaluated treatment-induced toxicities according to Veterinary Radiation Therapy Oncology Group criteria.
Achieved an overall response rate of 52%, comprising 40% complete response, 12% partial response, and 48% no response across all lesions.
Complete remission reached 62.5% in T1 tumors, with an overall mean disease-free time of 271 days and mean overall survival of 224 days.
Toxicity was confined to mild-to-moderate skin erythema, epilation, ulceration, and conjunctivitis, confirming protocol safety despite lower overall efficacy compared to alternative schedules.

Cite This Study

Cunha et al. (2010) studied this question.

synapsesocial.com/papers/6a717ee1f44fa9f079df4957 https://doi.org/10.1016/j.jfms.2009.10.005

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