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Original Article

Open Vet J. 2016; 6(1): 6-14

Post-surgical treatment of thyroid carcinoma in dogs with retinoic acid 9 cis improves patient outcome

V. Castillo, P. Pessina, P. Hall, M.F. Cabrera Blatter, D. Miceli, E. Soler Arias, P. Vidal.

Cited by 7 Articles

The objective of the present study was to compare the effects of isotretinoin 9-cis (RA9-cis) as a post-surgery treatment of thyroid carcinoma to a traditional treatment (doxorubicin) and no treatment. Owners who did not want their dogs to receive treatment were placed into the control group A (GA; n=10). The remaining dogs were randomly placed into either group B (GB; n=12) and received doxorubicin at a dose of 30 mg/m2 every three weeks, for six complete cycles or group C (GC; n=15) and treated with RA9-cis at a dose of 2 mg/kg/day for 6 months. The time of the recurrence was significantly shorter in the GA and GB compared to GC (P=0.0007; P=0.0015 respectively), while we did not detect differences between GA and GB. The hazard ratio of recurrence between GA and GB compared to GC were 7.25 and 5.60 times shorter, respectively. We did not detect any differences between the other groups. The risk ratio of recurrence was 2.0 times higher in GA compared to GC and 2.1 times higher in GB compared to GC. The type of carcinoma had an effect on time of survival with follicular carcinomas having an increased mean survival timethan follicular-compact carcinomas (P

Key words: Differentiated follicular carcinoma, Retinoic acid, Thyroid carcinoma, Thyroid tumour

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