Showing 2 Abstracts.
Osteonecrosis (ON) is a significant complication in pediatric oncology, characterized by bone tissue death due to impaired blood supply. It most commonly affects poorly vascularized bones, such as the femoral head, distal femur, and proximal tibia. In children with oncohematological diseases, ON is often multifactorial—linked to prolonged corticosteroid therapy, chemotherapy, and underlying systemic conditions. Prevalence can reach up to 40% in high-risk groups. This educational poster aims to equip radiologists with practical imaging strategies for early detection and staging of ON, enhancing diagnostic confidence and multidisciplinary collaboration. This work builds on institutional experience at a high-complexity pediatric hospital, integrating recent imaging protocols and outcome data to refine diagnostic pathways. Early diagnosis is crucial, as ON is frequently asymptomatic and multifocal at onset. Magnetic resonance imaging (MRI) is the gold standard for early detection, with whole-body MRI protocols enabling comprehensive screening of asymptomatic patients. MRI findings include bone marrow edema and geographic areas of necrosis, often surrounded by the characteristic double line sign. Advanced stages show subchondral collapse, loss of sphericity, and cartilage irregularity, which can be graded using systems such as Niinimäki, Ficat and Arlet, or ARCO. The use of whole-body MRI for asymptomatic screening represents a proactive approach that may reduce long-term disability in pediatric oncology patients. Conventional radiography is useful for assessing bone structure and detecting late-stage changes, while computed tomography (CT) is reserved for preoperative planning. Treatment strategies depend on the severity and location, ranging from conservative management (corticosteroid withdrawal, bisphosphonates, load reduction) to surgical interventions such as core decompression or, in severe cases, joint replacement. Imaging plays a key role not only in early diagnosis but also in monitoring treatment response and guiding surgical planning. Imaging also plays an important role in complications, that include acute subchondral fractures and superinfection, which require prompt recognition and management. Radiologists play a pivotal role in early detection. Familiarity with imaging patterns and grading systems is essential to guide timely intervention and improve long-term outcomes. Read More
Meeting name: IPR 2026 Congress , 2026
Authors: Riera Luis, Moreira Maricela, Arenós Jesús, Perdomo-luna Camilo, Vázquez Elida, Kvist Ola
Keywords: Oncology, Osteonecrosis, MR
Background: With the increasing use of advanced imaging techniques in pediatric populations, incidental findings—particularly pulmonary nodules—are being detected with greater frequency. While many of these nodules are benign, their discovery often leads to clinical uncertainty, additional imaging, and potential anxiety for patients and families. Unlike in adult patients, for whom the Fleischner Society guidelines for incidental pulmonary nodules are well-established, pediatric-specific recommendations remain limited. Objective: This educational poster aims to provide a comprehensive overview of incidental pulmonary nodules identified on pediatric chest imaging. It seeks to guide radiologists in evidence-based decision-making regarding the evaluation, follow-up, and management of these findings. Content Organization: The poster is structured into the following key sections: Epidemiology and Etiology: Overview of the prevalence and common causes of incidental pulmonary nodules in children, including infectious, inflammatory, and neoplastic etiologies. Imaging Characteristics: Description of typical imaging features on chest radiographs and CT scans that help differentiate benign from potentially malignant nodules. Current Guidelines and Limitations: Review of existing guidelines and literature. Discussion of recent efforts to develop pediatric-specific protocols. Risk Stratification and Management Algorithms: Presentation of proposed algorithms for managing incidental nodules based on size, morphology, patient age, clinical history, and risk factors. Radiologist’s Role and Communication Strategies: Emphasis on the importance of clear reporting, interdisciplinary collaboration, and effective communication to reduce unnecessary interventions and anxiety. Future: Review the potential use of new techniques (Photon-counting CT, MR) in this context. Conclusion: The detection of incidental pulmonary nodules in pediatric imaging presents a diagnostic challenge. Through a structured, evidence-informed approach, radiologists can play a pivotal role in guiding appropriate management, minimizing harm, and ensuring optimal patient care. This poster aims to empower radiologists with practical tools and knowledge to navigate these increasingly common findings. Read More
Meeting name: IPR 2026 Congress , 2026
Authors: Riera Luis, Riaza Lucía, Gonzalo Marta, Coma Ana, Vázquez Elida, Perdomo-luna Camilo, Kvist Ola, Liszewski Mark