Introduction :<br /><br />Veterinary histopathology is a fundamental tool for understanding cellular and tissue changes in animals. The study of animal tumors using histopathological techniques assists veterinarians in early diagnosis, tumor classification, and devising precise treatment plans. Moreover, these studies provide a scientific basis for understanding tumors shared between animals and humans, supporting comparative medical research.<br /><br />1. Importance of Tumor Studies in Veterinary Medicine<br />Early Diagnosis: Enables accurate differentiation between benign and malignant tumors, allowing timely therapeutic intervention.<br />Understanding Tumor Progression: Histopathological analysis helps determine the stages of tumor development and its extent.<br />Supporting Comparative Research: Certain animal tumors resemble human tumors, contributing to the development of cross-species medical treatments.<br /><br />2. Histopathological Techniques Used<br />Conventional Microscopy: Allows identification of cellular composition, tumor type, and growth patterns.<br />Specialized Staining: Techniques such as H&E and immunohistochemical stains identify protein markers and cancerous cells.<br />Molecular Analysis: PCR and genetic sequencing techniques help detect mutations responsible for tumor development.<br /><br />3. Practical Applications<br />Cutaneous Tumors: Skin tissue samples are analyzed to determine tumor type and degree of invasiveness.<br />Internal Tumors: Tissue analysis from organs such as the liver, kidneys, and spleen identifies tumor origin and affected cell types.<br />Treatment Response Evaluation: Monitoring histopathological changes post-chemotherapy or surgery to assess therapeutic efficacy.<br /><br />Conclusion :<br /><br />Histopathology plays a vital role in the study of animal tumors, enabling veterinarians to achieve accurate diagnoses and implement effective treatment strategies. Furthermore, this discipline enhances comparative scientific research between animal and human diseases, opening new avenues for understanding tumors and developing innovative therapies.<br /><br /><br />Ameer bahaa fahim <br /><br />Al-Mustaqbal University <br />The first University in Iraq.