Pediatric Osteosarcoma: Correlation of Imaging Findings with Histopathologic Features, Treatment, and Outcome. July-August 2022-RG210171-2022-Nguyen-SG

RG210171-2022-Nguyen-SG

Pdf Summary

The study guide for Test 21-0171 focuses on pediatric osteosarcoma, exploring its imaging correlations with histopathologic features, treatment, and outcomes. Key points covered in the guide include multiple-choice questions designed to test the reader's knowledge on various aspects of osteosarcoma.<br /><br />1. <strong>Primary Bone Malignancy in Children</strong>: Osteosarcoma is identified as the most common primary bone malignancy in children, over options like Ewing sarcoma, leukemia, and primary lymphoma of the bone.<br /><br />2. <strong>Osteosarcoma Subtypes</strong>: Among the World Health Organization-categorized subtypes, conventional or classic osteosarcoma is recognized as the most common.<br /><br />3. <strong>Imaging Modality for Tumor Margins</strong>: Magnetic Resonance Imaging (MRI) is favored for preoperatively characterizing tumor margins in patients with localized osteosarcoma requiring resection. Other modalities like radiography, CT, and bone scintigraphy are considered less optimal for this purpose.<br /><br />4. <strong>Cause of Irregular Synovium Enhancement</strong>: The study queries the cause of irregular synovium enhancement visible in an imaging figure, attributing it to joint invasion compared to options like skip lesions, neurovascular involvement, or normal synovium.<br /><br />5. <strong>Reconstruction Method in Young Patients</strong>: In reconstructive actions for very young patients, aged around 8 years, rotationplasty emerges as the preferred method. Other options like joint preservation surgery, autograft or allograft reconstruction, and extendible endoprostheses are alternatives that might be considered based on specific clinical scenarios.<br /><br />This document serves as a preparatory guide for participants aspiring to complete the corresponding SA-CME activity, which is conducted online at the Radiological Society of North America's (RSNA) Learning Center. Participants must take the test to earn credit, as the guide itself does not qualify for credit just by its review or submission.

Keywords

pediatric osteosarcoma

imaging correlations

histopathologic features

treatment outcomes

primary bone malignancy

osteosarcoma subtypes

MRI tumor margins

irregular synovium enhancement

rotationplasty

RSNA SA-CME activity