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Solid enhancing mass lesion extending to pleural margin seen in the right upper lobe.

Diagnosis:

PNET (Askin?s Tumor)

Discussion

Peripheral primitive neuroectodermal tumors (pPNETs) are also classified as part of the Ewing family of tumors (EFTs)

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Ewing sarcoma, however, is more common in bone, while peripheral primitive neuroectodermal tumors (pPNETs) are more common in soft tissues.

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