Non-Invasive Imaging of Pediatric Abdominal Tumors: The Role of Ultrasound and Complementary Modalities

Abstract

Background: Pediatric abdominal tumors present a diagnostic challenge due to nonspecific
clinical symptoms and the need to minimize invasive procedures and exposure to ionizing
radiation. Imaging is central to early detection, tumor characterization, and clinical management.
Objective: To review the role of non-invasive imaging in pediatric abdominal tumors, with a
focus on ultrasound as a first-line diagnostic modality, and to compare its utility with other noninvasive
techniques, including magnetic resonance imaging and computed tomography.
Methods: A narrative review of peer-reviewed literature was conducted, emphasizing studies on
diagnostic accuracy, safety, and clinical applications of non-invasive imaging in pediatric
abdominal tumors. Imaging guidelines, consensus statements, and recent technological advances
were included
Results: Ultrasound is a highly effective, safe, and accessible first-line imaging tool for initial
evaluation. Its real-time imaging, absence of ionizing radiation, and high diagnostic accuracy
make it valuable for early detection and follow-up. Magnetic resonance imaging provides
superior soft-tissue characterization and staging, whereas computed tomography is reserved for
selected cases despite radiation concerns.
Conclusion: Non-invasive imaging is essential for diagnosing and managing pediatric
abdominal tumors. Ultrasound, complemented by magnetic resonance imaging and computed
tomography when indicated, provides a child-safe strategy that improves diagnostic confidence,
guides clinical decision-making, and enhances patient outcomes. Advances in technology and
standardized imaging protocols are expected to further optimize pediatric tumor evaluation.