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Identifying variables influencing the survival of cats with primary lung tumours

J. Nunley, J. Sutton, W. Culp, D. Wilson, K. Coleman, R. Demianiuk and others

PRIMARY lung tumours are uncommon in cats, but when they are seen the clinical signs can be non-specific and may manifest late in the progression of the disease. Imaging techniques are often used before tumour removal as staging tools. There were two objectives of this study: first, to identify how variables that were evident upon CT affected survival in cats undergoing surgical removal of a primary lung tumour; and second, to determine whether the histological grade of the tumours affected long-term survival.

The medical records from four referral hospitals over a 10-year period (2004-2014) were reviewed. For inclusion into the study, cats had to have a diagnosis of primary lung tumour, complete medical records, a preoperative CT scan and a biopsy slide – 28 cats were included. The following variables were recorded: age, breed, sex, clinical signs, duration of clinical signs, clinical laboratory results and CT findings. Tumour size was also recorded.

Clinical signs were present in 64 per cent of cats, with the most common clinical sign being coughing, followed by anorexia, weight loss and dyspnoea. The median survival time …

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