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  • Title: Retrospective evaluation of canine palpebral masses treated with debulking and cryotherapy: 46 cases.
    Author: Zibura AE, Henriksen ML, Rendahl A, Lim CC, Reilly C.
    Journal: Vet Ophthalmol; 2019 May; 22(3):256-264. PubMed ID: 30052302.
    Abstract:
    PURPOSE: To evaluate the recurrence frequency and the time to recurrence of canine palpebral masses treated with debulking and cryotherapy. METHODS: Medical records of dogs that underwent debulking and cryotherapy for palpebral masses from December 2010 to November 2015 at the University of Minnesota's Veterinary Medical Center were reviewed. A telephone survey with owners was used to determine recurrence and time to recurrence. RESULTS: Forty-six masses (31 dogs) were included in this retrospective study. Included palpebral masses were as follows: adenomas 17/46 (37%), epitheliomas 8/46 (17.4%), papillomas 6/46 (13%), inflammatory masses 6/46 (13%), mixed adenoma-papillomas 6/46 (13%), mixed epithelioma-papillomas 2/46 (4.4%), and a melanocytoma 1/46 (2.2%). Of the seven masses that were noted to recur (7/46, 15.2%), three were mixed adenoma-papillomas (three of six adenoma-papillomas, 50%), two were epitheliomas (two of eight epitheliomas, 25%), one was a papilloma (one of six papillomas, 16.7%), and one was a melanocytoma (one of one melanocytoma, 100%). Average recurrence time was 367.9 days [range: 30-904 days]. A significant association between tumor type and tumor recurrence was found (P = .009). Adenomas were significantly less likely to recur (P = .017), and mixed adenoma-papillomas were significantly more likely to recur (P = .001). CONCLUSIONS: Debulking and cryotherapy is an effective method of treatment for eyelid masses in dogs with a low study recurrence rate of 15.2% and average recurrence time of 367.9 days. Results also suggest that mixed adenoma-papilloma masses have a significantly higher recurrence rate than other eyelid masses, whereas adenomas had no recurrence in our study population.
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