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Part of the book series: Medical Radiology ((Med Radiol Diagn Imaging))

Key Points

• ES and PNET are part of the same spectrum of neoplastic disorders, irrespective of their localisation or cellular differentiation.

• ES/PNET occurs in young patients.

• On radiographs/CT, 37.5% are located in the axial skeleton and 62.5% in the peripheral skeleton.

• ES/PNET involving the bone is mostly mixed sclerotic-lytic. A spiculated periosteal reaction is most frequent.

• The most characteristic finding on MRI is the presence of a large soft tissue mass.

• At initial presentation, 20%–30% of patients have pulmonary and/or skeletal metastases.

• PET-CT is becoming standard of care for initial staging, in monitoring response to chemotherapy and detection of recurrence or new metastatic disease.

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Vanhoenacker, F., van Kerkhove, F., Peersman, B., Brys, P., de Schepper, A. (2009). Ewing Sarcoma/PNET Tumors. In: Davies, A., Sundaram, M., James, S. (eds) Imaging of Bone Tumors and Tumor-Like Lesions. Medical Radiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-77984-1_17

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  • DOI: https://doi.org/10.1007/978-3-540-77984-1_17

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