Key result
Cytomorphologic examination of extraskeletal Ewing sarcoma reveals typical small cell morphology in ~85% of cases.
Why the study?
What are the cytomorphologic features of extraskeletal Ewing sarcoma?
Population
20 aspiration cases of extraskeletal Ewing sarcoma with histopathologic confirmation
Design
Case_series
Authors
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May aid FNA diagnosis of extraskeletal Ewing sarcoma; leaves open validation in larger prospective series.
Observational (n=20)
What are the cytomorphologic features of extraskeletal Ewing sarcoma?
Extraskeletal Ewing sarcoma shows cytologic features similar to Ewing sarcoma of bone, and CD99/O13 immunocytostaining with molecular studies can help establish a definitive fine-needle aspiration diagnosis.
Guiter et al. (1999) conducted an observational in Extraskeletal Ewing sarcoma (n=20). Cytomorphologic examination was evaluated on Cytomorphologic features. Cytomorphologic examination of extraskeletal Ewing sarcoma revealed typical small cell morphology in 85% of cases and strong CD99/O13 membranous reactivity in all cases.
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