Outcome of stereotactic body radiation for treatment of nasal and nasopharyngeal lymphoma in 32 cats
Abstract Background The safety and efficacy of stereotactic body radiation therapy (SBRT) in the treatment of localized nasal lymphoma in cats has not been described. Hypothesis Stereotactic body radiation therapy with or without adjuvant chemotherapy is an effective and well‐tolerated treatment for...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2022-03-01
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| Series: | Journal of Veterinary Internal Medicine |
| Subjects: | |
| Online Access: | https://doi.org/10.1111/jvim.16388 |
| _version_ | 1818315184608903168 |
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| author | Alicja I. Reczynska Susan M. LaRue Mary‐Keara Boss Ber‐In Lee Del Leary Kelsey Pohlmann Lynn Griffin Susan Lana Tiffany Wormhoudt Martin |
| author_facet | Alicja I. Reczynska Susan M. LaRue Mary‐Keara Boss Ber‐In Lee Del Leary Kelsey Pohlmann Lynn Griffin Susan Lana Tiffany Wormhoudt Martin |
| author_sort | Alicja I. Reczynska |
| collection | DOAJ |
| description | Abstract Background The safety and efficacy of stereotactic body radiation therapy (SBRT) in the treatment of localized nasal lymphoma in cats has not been described. Hypothesis Stereotactic body radiation therapy with or without adjuvant chemotherapy is an effective and well‐tolerated treatment for localized nasal lymphoma in cats. Animals Thirty‐two client owned cats referred to Colorado State University for the treatment of nasal lymphoma. Methods Retrospective study of cats treated with SBRT between 2010 and 2020 at Colorado State University. Diagnosis of nasal lymphoma was obtained via cytology or histopathology. Signalment, radiation protocol, concurrent treatments, adverse effects, and survival were recorded. Results Progression free survival was 225 days (95% CI 98–514) and median survival time (MST) was 365 days (95% CI 123–531). No significant difference in survival was identified between cats that received 1 versus greater than 1 fraction (MST 427 vs. 123 days, P = 0.88). Negative prognostic factors included cribriform lysis (MST 121 vs. 876 days, P = 0.0009) and intracalvarial involvement (MST 100 vs. 438 days, P = 0.0007). Disease progression was noted in 38% (12/32), locally in 22% (7/32), and systemically in 16% (5/32). No cats developed acute adverse effects. Ten cats developed late adverse effects: keratitis/keratitis sicca (n = 2), alopecia (n = 4), and leukotrichia (n = 4). Twenty‐four cats (75%) had signs consistent with chronic rhinitis. Conclusions SBRT is effective and well tolerated for treating localized nasal lymphoma in cats. Outcomes for cats with lower stage disease (canine modified Adam's stage 3 and lower) are comparable to historic data of cats treated with fractionated radiation therapy. |
| first_indexed | 2024-12-13T09:01:30Z |
| format | Article |
| id | doaj.art-254fa02418fb4553a426ae56a4c35448 |
| institution | Directory Open Access Journal |
| issn | 0891-6640 1939-1676 |
| language | English |
| last_indexed | 2024-12-13T09:01:30Z |
| publishDate | 2022-03-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Veterinary Internal Medicine |
| spelling | doaj.art-254fa02418fb4553a426ae56a4c354482022-12-21T23:53:09ZengWileyJournal of Veterinary Internal Medicine0891-66401939-16762022-03-0136273374210.1111/jvim.16388Outcome of stereotactic body radiation for treatment of nasal and nasopharyngeal lymphoma in 32 catsAlicja I. Reczynska0Susan M. LaRue1Mary‐Keara Boss2Ber‐In Lee3Del Leary4Kelsey Pohlmann5Lynn Griffin6Susan Lana7Tiffany Wormhoudt Martin8Department of Environment and Radiological Health Sciences College of Veterinary Medicine and Biomedical Sciences, Colorado State University Fort Collins Colorado USADepartment of Environment and Radiological Health Sciences College of Veterinary Medicine and Biomedical Sciences, Colorado State University Fort Collins Colorado USADepartment of Environment and Radiological Health Sciences College of Veterinary Medicine and Biomedical Sciences, Colorado State University Fort Collins Colorado USADepartment of Environment and Radiological Health Sciences College of Veterinary Medicine and Biomedical Sciences, Colorado State University Fort Collins Colorado USADepartment of Environment and Radiological Health Sciences College of Veterinary Medicine and Biomedical Sciences, Colorado State University Fort Collins Colorado USAPetCure Oncology Loveland Colorado USADepartment of Environment and Radiological Health Sciences College of Veterinary Medicine and Biomedical Sciences, Colorado State University Fort Collins Colorado USADepartment of Clinical Science College of Veterinary Medicine and Biomedical Sciences, Colorado State University Fort Collins Colorado USADepartment of Environment and Radiological Health Sciences College of Veterinary Medicine and Biomedical Sciences, Colorado State University Fort Collins Colorado USAAbstract Background The safety and efficacy of stereotactic body radiation therapy (SBRT) in the treatment of localized nasal lymphoma in cats has not been described. Hypothesis Stereotactic body radiation therapy with or without adjuvant chemotherapy is an effective and well‐tolerated treatment for localized nasal lymphoma in cats. Animals Thirty‐two client owned cats referred to Colorado State University for the treatment of nasal lymphoma. Methods Retrospective study of cats treated with SBRT between 2010 and 2020 at Colorado State University. Diagnosis of nasal lymphoma was obtained via cytology or histopathology. Signalment, radiation protocol, concurrent treatments, adverse effects, and survival were recorded. Results Progression free survival was 225 days (95% CI 98–514) and median survival time (MST) was 365 days (95% CI 123–531). No significant difference in survival was identified between cats that received 1 versus greater than 1 fraction (MST 427 vs. 123 days, P = 0.88). Negative prognostic factors included cribriform lysis (MST 121 vs. 876 days, P = 0.0009) and intracalvarial involvement (MST 100 vs. 438 days, P = 0.0007). Disease progression was noted in 38% (12/32), locally in 22% (7/32), and systemically in 16% (5/32). No cats developed acute adverse effects. Ten cats developed late adverse effects: keratitis/keratitis sicca (n = 2), alopecia (n = 4), and leukotrichia (n = 4). Twenty‐four cats (75%) had signs consistent with chronic rhinitis. Conclusions SBRT is effective and well tolerated for treating localized nasal lymphoma in cats. Outcomes for cats with lower stage disease (canine modified Adam's stage 3 and lower) are comparable to historic data of cats treated with fractionated radiation therapy.https://doi.org/10.1111/jvim.16388cathypofractionated radiation therapylymphosarcomaSBRT |
| spellingShingle | Alicja I. Reczynska Susan M. LaRue Mary‐Keara Boss Ber‐In Lee Del Leary Kelsey Pohlmann Lynn Griffin Susan Lana Tiffany Wormhoudt Martin Outcome of stereotactic body radiation for treatment of nasal and nasopharyngeal lymphoma in 32 cats Journal of Veterinary Internal Medicine cat hypofractionated radiation therapy lymphosarcoma SBRT |
| title | Outcome of stereotactic body radiation for treatment of nasal and nasopharyngeal lymphoma in 32 cats |
| title_full | Outcome of stereotactic body radiation for treatment of nasal and nasopharyngeal lymphoma in 32 cats |
| title_fullStr | Outcome of stereotactic body radiation for treatment of nasal and nasopharyngeal lymphoma in 32 cats |
| title_full_unstemmed | Outcome of stereotactic body radiation for treatment of nasal and nasopharyngeal lymphoma in 32 cats |
| title_short | Outcome of stereotactic body radiation for treatment of nasal and nasopharyngeal lymphoma in 32 cats |
| title_sort | outcome of stereotactic body radiation for treatment of nasal and nasopharyngeal lymphoma in 32 cats |
| topic | cat hypofractionated radiation therapy lymphosarcoma SBRT |
| url | https://doi.org/10.1111/jvim.16388 |
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