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Background
Standardized terminology is critical to providing consistent reports to referring clinicians. This lexicon aims to provide a reference for revised abdominopelvic tumor nomenclature. This lexicon also provides a timeline of revisions in the nomenclature of common and not-so-common neoplastic entities encountered in abdominal imaging.

Educational Goals / Teaching Points
To provide a reference for updated abdominopelvic tumor nomenclature. To apprise radiologists of the pathological basis of these changes. To optimize communication between radiologists, pathologists, and referring providers and prevent confusion during the transition to the revised system.

Key Anatomic/Physiologic Issues and Imaging Findings/Techniques
Medical terminology evolves over time as our understanding of neoplastic entities improves. An updated lexicon ensures that the names of abdominal tumors accurately reflect their characteristics, origin, and potential behavior. This brings clarity, reduces confusion, and aids in effective communication among healthcare professionals. It also provides a system for consistent data collection and analysis in both clinical practice and research and promotes global consistency. Imaging characteristics of these entities across commonly utilized imaging modalities, along with gross and microscopic correlation, have been illustrated to synthesize a comprehensive lexicon catering to abdominal neoplasms that have undergone single or multiple revisions in naming.

Conclusion
An updated lexicon for updated abdominal tumor nomenclature is paramount in promoting precise communication among healthcare professionals, accurate diagnosis and treatment, seamless interdisciplinary collaboration, global consistency in medical terminology, and adaptation to emerging medical technologies. It ensures that medical practice remains current, cohesive, and conducive to advancing patient care and research in the field of abdominal oncologic imaging.