What question did this study set out to answer?

To evaluate the histological, immunohistochemical, and ultrastructural features of atypical Ewing sarcoma of bone displaying neuroectodermal differentiation.

October 1, 1987CancerOpen Access

Small round blue cell sarcoma of bone mimicking atypical Ewing's sarcoma with neuroectodermal features. An analysis of five cases with immunohistochemical and electron microscopic support

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Authors

ALAntonio Llombart‐BoschUniversitat de València MLM. J. LacombeInstitut de Cancérologie de l'Ouest GCG ContessoInstitut Gustave Roussy

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Implication

Case series demonstrates neuroectodermal differentiation in atypical Ewing sarcoma of bone, indicating these neoplasms represent primary neuroectodermal bone tumors.

Key Points

To evaluate the histological, immunohistochemical, and ultrastructural features of atypical Ewing sarcoma of bone displaying neuroectodermal differentiation.
Reviewed 39 cases of bone tumors initially diagnosed as Ewing sarcoma using electron microscopy.
Identified and isolated 5 atypical cases exhibiting neuroectodermal traits for further immunohistochemical and ultrastructural profiling.
All 5 atypical cases demonstrated small round blue cells with rosette-like patterns and stained positive for neuron-specific enolase and HNK-1 (Leu-7).
Ultrastructural examination revealed neural features including dendritic processes, synaptic-like buttons, neurotubules, and dense-core neurosecretory granules.
Tumors presented clinical and radiological features similar to typical Ewing sarcoma of bone, with one case experiencing a local relapse as pleomorphic neuroblastoma.

Cite This Study

Llombart‐Bosch et al. (1987) studied this question.

synapsesocial.com/papers/6aa0399d03e29c6012e9ebdf https://doi.org/10.1002/1097-0142(19871001)60:7<1570::aid-cncr2820600727>3.0.co;2-r

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Implication

Case series demonstrates neuroectodermal differentiation in atypical Ewing sarcoma of bone, indicating these neoplasms represent primary neuroectodermal bone tumors.

Small round blue cell sarcoma of bone mimicking atypical Ewing's sarcoma with neuroectodermal features. An analysis of five cases with immunohistochemical and electron microscopic support

Discussion

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Implication

Key Points

Cite This Study

Small round blue cell sarcoma of bone mimicking atypical Ewing's sarcoma with neuroectodermal features. An analysis of five cases with immunohistochemical and electron microscopic support

Discussion

Member takes

Implication

Key Points

Cite This Study

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