Sarcoma Diagnosis and Treatment
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MRI and CT are essential for characterizing the distinctive radiological profile of maxillofacial Ewing sarcoma, enabling early identification and improving patient outcomes in this rare malignancy.
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Background: Ewing sarcoma (ES) is a rare malignant bone tumor with predilection for the mandible and maxilla in the head and neck region. However, existing literature comprises fragmented case reports and small case series that fail to establish consolidated, evidence-based understanding of characteristic radiological patterns in the maxillofacial region, hindering timely diagnosis and potentially leading to misdiagnosis or delayed intervention. Methodology: A systematic review and pooled patient-level descriptive analysis were conducted according to the PRISMA guidelines and pre-registered on PROSPERO. Comprehensive searches of PubMed, OVID, and Cochrane databases (inception to July 2025) identified studies reporting radiological findings of biopsy-confirmed maxillofacial Ewing sarcoma. Quality assessment using Joanna-Briggs Institute criteria ensured inclusion of only high-quality cases (quality score ≥4/5). Synthesis Without Meta-analysis (SWiM) methodology with pooled prevalence estimation and binomial vote-counting analysis were employed for 68 published cases. Results: Four radiological features demonstrated consistent predominance across pooled cases: soft tissue mass presence (100%, 95% CI: 94.7-100.0%), enhancing soft tissue (77.6%, 95% CI: 65.8-86.9%), cortical destruction (69.0%, 95% CI: 55.5-80.5%), and notably, absence of periosteal reaction (84.7%, 95% CI: 73.0-92.8%). Location-specific radiological phenotypes were evident: maxillary tumors demonstrated near-universal sinus involvement (100%) with high soft tissue enhancement (92.3%), whereas mandibular tumors showed predominant cortical destruction (80.0%) and teeth involvement (81.2%). Conclusion: MRI and CT are essential for characterizing the distinctive radiological profile of maxillofacial Ewing sarcoma, enabling early identification and improving patient outcomes in this rare malignancy.
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@article{George2026Radiological,
title = {Radiological Patterns in Maxillofacial Ewing Sarcoma: A systematic review with pooled patient-level descriptive analysis},
author = {Ajo Babu George and Shishir Maharana and Ridhi Agarwal and Abiya Mariam George and Sonam Khurana},
journal = {bioRxiv (Cold Spring Harbor Laboratory)},
year = {2026},
doi = {10.64898/2026.08.12.744464},
url = {https://doi.org/10.64898/2026.08.12.744464}
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