{"title":"Prognostic factors and survival following radiation therapy for canine nasal tumors: A single-institution retrospective study of 166 cases.","authors":"Rui Mizuno, Takashi Mori","doi":"10.5455/OVJ.2024.v14.i7.3","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Prognostic factors in dogs with nasal tumors include several variables. However, factors that can measure prognosis have not yet been identified due to considerable divergence among reports.</p><p><strong>Aim: </strong>To describe the computed tomography (CT) imaging, treatment, and outcomes of dogs with nasal tumors, as well as detect negative prognostic factors through the analysis of a substantial number of cases from a single institution. Furthermore, based on CT findings, this study aimed to identify independent prognostic factors for nasal tumors in dogs.</p><p><strong>Methods: </strong>A total of 166 client-owned dogs were diagnosed with nasal tumors at Gifu University Veterinary Hospital between 2015 and 2019. Data were retrospectively collected from the electronic medical records.</p><p><strong>Results: </strong>Univariate analysis revealed a significant difference in survival time between adenocarcinoma and squamous cell carcinoma in 166 canine nasal tumors treated with megavoltage (MeV) radiation therapy at a single institution (<i>p</i> = .015). There was a significant difference in survival time between carcinoma and sarcoma (<i>p</i> = .04). Regarding CT imaging findings, significant differences in survival time were observed for frontal sinus invasion (<i>p</i> = .007), cribriform plate destruction (<i>p</i> < .001), and lymph node metastasis (<i>p</i> = .003). Multivariate Cox regression analysis was performed to assess frontal sinus invasion, cribriform plate destruction, histopathologic subtypes, and lymph node metastasis as negative prognostic factors; however, only cribriform plate destruction was a significant negative prognostic factor for survival time (<i>p</i> = .004).</p><p><strong>Conclusion: </strong>Multivariate Cox regression analysis showed that cribriform plate destruction was the main factor in predicting a negative prognosis among 166 canine nasal tumors treated with MeV radiation therapy at a single institution. Therefore, we propose a new 2-tier staging classification for canine nasal tumors with the presence or absence of cribriform plate destruction based on CT examination as the only evaluation factor.</p>","PeriodicalId":19531,"journal":{"name":"Open Veterinary Journal","volume":null,"pages":null},"PeriodicalIF":0.9000,"publicationDate":"2024-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11338602/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Open Veterinary Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.5455/OVJ.2024.v14.i7.3","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/7/31 0:00:00","PubModel":"Epub","JCR":"Q3","JCRName":"VETERINARY SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
Background: Prognostic factors in dogs with nasal tumors include several variables. However, factors that can measure prognosis have not yet been identified due to considerable divergence among reports.
Aim: To describe the computed tomography (CT) imaging, treatment, and outcomes of dogs with nasal tumors, as well as detect negative prognostic factors through the analysis of a substantial number of cases from a single institution. Furthermore, based on CT findings, this study aimed to identify independent prognostic factors for nasal tumors in dogs.
Methods: A total of 166 client-owned dogs were diagnosed with nasal tumors at Gifu University Veterinary Hospital between 2015 and 2019. Data were retrospectively collected from the electronic medical records.
Results: Univariate analysis revealed a significant difference in survival time between adenocarcinoma and squamous cell carcinoma in 166 canine nasal tumors treated with megavoltage (MeV) radiation therapy at a single institution (p = .015). There was a significant difference in survival time between carcinoma and sarcoma (p = .04). Regarding CT imaging findings, significant differences in survival time were observed for frontal sinus invasion (p = .007), cribriform plate destruction (p < .001), and lymph node metastasis (p = .003). Multivariate Cox regression analysis was performed to assess frontal sinus invasion, cribriform plate destruction, histopathologic subtypes, and lymph node metastasis as negative prognostic factors; however, only cribriform plate destruction was a significant negative prognostic factor for survival time (p = .004).
Conclusion: Multivariate Cox regression analysis showed that cribriform plate destruction was the main factor in predicting a negative prognosis among 166 canine nasal tumors treated with MeV radiation therapy at a single institution. Therefore, we propose a new 2-tier staging classification for canine nasal tumors with the presence or absence of cribriform plate destruction based on CT examination as the only evaluation factor.
期刊介绍：
Open Veterinary Journal is a peer-reviewed international open access online and printed journal that publishes high-quality original research articles. reviews, short communications and case reports dedicated to all aspects of veterinary sciences and its related subjects. Research areas include the following: Infectious diseases of zoonotic/food-borne importance, applied biochemistry, parasitology, endocrinology, microbiology, immunology, pathology, pharmacology, physiology, epidemiology, molecular biology, immunogenetics, surgery, ophthalmology, dermatology, oncology and animal reproduction. All papers are peer-reviewed. Moreover, with the presence of well-qualified group of international referees, the process of publication will be done meticulously and to the highest standards.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
