Advancing Veterinary Oncology: Next-Generation Diagnostics for Early Cancer Detection and Clinical Implementation.

Simple Summary: Cancer is a serious problem for dogs and cats, often diagnosed when it is already advanced and more difficult to treat. This article reviews new ways to find cancer earlier in pets, so they have a better chance of successful treatment. These methods include special scanning techniques powered by computer-based image analysis, blood tests that look for cancer markers without surgery, new ways to examine DNA or other molecules from tumors, and even a simple worm-based test to detect changes linked to cancer. By catching the disease sooner, veterinarians can suggest treatments that are more targeted and less invasive, helping pets live longer and with a higher quality of life. Because cancers in animals and humans share many features, these discoveries can guide research for both species. The goal is to make advanced cancer testing available and affordable in more clinics, leading to earlier detection and better outcomes. Ultimately, this work benefits families, pets, and the broader scientific community. Cancer is a leading cause of death among companion animals, with many cases diagnosed at advanced stages when clinical signs have appeared, and prognosis is poor. Emerging diagnostic technologies, including Artificial Intelligence (AI)-enhanced imaging, liquid biopsies, molecular diagnostics, and nematode-based screening, can improve early detection capabilities in veterinary medicine. These tools offer non-invasive or minimally invasive methods to facilitate earlier detection and treatment planning, addressing the limitations of traditional diagnostics, such as radiography and tissue biopsies. Recent advancements in comparative oncology, which leverage the biological similarities between human and companion animal cancers, underscore their translational value in improving outcomes across species. Technological advances in genomics, bioinformatics, and machine learning are driving a shift toward precision medicine, enabling earlier detection, personalized treatments, and monitoring of disease progression. Liquid biopsy testing detects circulating tumor DNA and tumor cells, providing actionable insights into tumor genetics without invasive procedures. Imaging systems enhance diagnostic precision, offering consistent and accurate tumor identification across veterinary practices, while portable innovations like Caenorhabditis elegans-based screening provide accessible options for underserved regions. As these technologies migrate from human medicine to veterinary applications, they are poised to redefine cancer care for companion animals. This review highlights key advancements in diagnostic technologies and their application in veterinary oncology, with a focus on enhancing early detection, accessibility, and precision in cancer care. By fostering the adoption of these innovations, veterinary oncology can achieve a new standard of care, improving outcomes for both animals and humans through the lens of comparative oncology. [ABSTRACT FROM AUTHOR]