Key result
18F-FDG PET/CT successfully identified a rare case of Ewing's sarcoma metastasis to the peritoneum and omentum, demonstrating its utility in detecting recurrence and treatment response.
Why the study?
To report a rare case of Ewing's sarcoma metastasis to the peritoneum and omentum identified on 18F-FDG PET/CT and its treatment response.
Case Report (n=1)
18F-FDG PET/CT is valuable for detecting rare peritoneal metastases and monitoring treatment response in Ewing's sarcoma.
Alerts clinicians to atypical peritoneal Ewing sarcoma spread; leaves open optimal management strategies pending larger studies.
Ewing's sarcoma is an uncommon and highly metastatic form of sarcoma affecting children and young adults, occurring in approximately 1 in 1.5 million individuals, with a predominance in males. We present an exceptionally unique case highlighting Ewing's sarcoma metastasis to the peritoneum and omentum, identified through an 18F-fluorodeoxyglucose positron emission tomography/computed tomography (18F-FDG PET/CT) scan and its unforeseen treatment response. In contrast to previously published literature concerning primary peritoneal primitive neuroectodermal tumors, this exceedingly notable instance illuminates the occurrence of metastatic Ewing's sarcoma within the peritoneum, as opposed to originating as a primary tumor within the peritoneum, revealing diagnostic intricacies. This case accentuates several pivotal learning points that enhance our understanding of Ewing's sarcoma. Also, the noteworthy high sensitivity and specificity of 18F-FDG PET/CT allow for early detection of recurrence and treatment response, substantially improving prognosis in Ewing's sarcoma patients, aiding in timely therapeutic interventions and optimizing patient outcomes.
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Singh et al. (2025) conducted a case report in Ewing's sarcoma metastasis to the peritoneum and omentum (n=1). 18F-FDG PET/CT was evaluated. 18F-FDG PET/CT successfully identified a rare case of Ewing's sarcoma metastasis to the peritoneum and omentum, demonstrating its utility in detecting recurrence and treatment response.
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