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4099577 
Journal Article 
CT and MR findings in a neuroforaminal extraskeletal Ewing sarcoma mimicking benign nerve sheath tumor 
Avcu, S; Ozcan, HN; Izmirli, M; Lemmerling, M 
2012 
Yes 
Irish Journal of Medical Science
ISSN: 0021-1265 
181 
1 
123-125 
English 
20676795 
WOS:000303540500024 
has retraction 4102120 Retraction note to:. Ir J Med Sci (2012) 181:123-5
INTRODUCTION: We report the CT and MR findings in a 30-year-old man with extraskeletal Ewing sarcoma (EES) involving the left neural foramen at L5-S1 level.

MATERIALS AND METHODS: The patient was evaluated with preoperative lumbosacral CT and MR imaging and postoperative lumbosacral MR imaging.

RESULTS: The lesion was hyperdense on CT, isointense on T1- and T2-weighted MR images, and enhanced homogeneously after intravenous gadolinium injection. With these CT and MR findings, surgery was performed with a presumptive diagnosis of nerve sheath tumor, but the histopathological examination revealed EES. Chemotherapy and radiotherapy were planned postoperatively.

CONCLUSION: This case illustrates that even in benign looking lesions in a neuroforamen one can never exclude malignancy, and this is even more true in a population of young adults.