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OtherPEDIATRICS

Central Nervous System Extraosseous Ewing Sarcoma: Radiologic Manifestations of This Newly Defined Pathologic Entity

J.S. Pekala, S. Gururangan, J.M. Provenzale and S. Mukundan
American Journal of Neuroradiology March 2006, 27 (3) 580-583;
J.S. Pekala
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S. Gururangan
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J.M. Provenzale
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S. Mukundan Jr.
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  • Fig 1.
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    Fig 1.

    A, Unenhanced CT image demonstrates a 2.4 × 3.8-cm hyperattenuated, well-circumscribed, extra-axial mass centered on the right tentorium.

    B, Precontrast axial T1-weighted MR image reveals a heterogeneously hyperintense mass with a broad tentorial attachment.

    C, Postcontrast coronal T1-weighted image reveals a homogeneously enhancing mass demonstrating a smooth lobular contour, with both infratentorial and supratentorial components.

    D, Hyperintense signal intensity on DWI is seen within the medial aspect of the lesion.

  • Fig 2.
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    Fig 2.

    A, Precontrast axial T1-weighted image reveals a 8.0 × 8.0-cm predominantly hyperintense lobular medial right frontal lobe mass that was large enough to obscure the distinction between an intra-axial or extra-axial mass lesion.

    B, Postcontrast axial T1-weighted image demonstrates diffuse heterogeneous enhancement.

    C, Axial T2-weighted image with diffuse heterogeneous signal intensity

    D, Predominantly hyperintense signal intensity on axial DWI.

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  • Summary of reported imaging findings

    Patient No./Age (y)/SexStudyLocationSolitary/MultipleMarginsT1 SignalT2 SignalDiffusion SignalEnhancementEvidence of HemorrhageCystic ComponentDistant Mets
    1/8/FPekala et al (this study)Midline posterior fossa dural based, extending into left temporal areaSolitaryCirc/LobHeteroHeteroPredom HyperIntense, diffuseYNN
    2/7/FPekala et al (this study)Right frontal, possible falcine attachmentSolitaryCirc/LobHyperHeteroPredom HyperIntense, diffuseYNY, left lung base
    3/4/MJay et al6Midline posteriorSolitary fossa, no dural attachmentCirc/LobN/AN/AN/AIntense, diffuseNNY, spinal drop metastasis
    4/5/MKatayma et al8Left posterior fossa dural based, extending into left temporal areaSolitaryCirc/LobHypoHypoN/AIntense, diffuseNYN
    5/12/MDedeurwaerdere et al9Right frontal dural basedSolitaryCirc/LobIso/HypoN/AN/AIntense, diffuseN/ANN
    6/17/MDedeurwaerdere et al9Right frontal dural basedSolitaryCirc/LobIso/HypoN/AN/AIntense, diffuseN/ANN
    7/6/MAntunes et al10Right frontal dural basedSolitaryCirc/LobN/AN/AN/AIntense, diffuseNYN
    8/30/FPapotti et al11Right frontal dural bsedTwo adjacentCirc/LobN/AN/AN/AN/ANNN
    • Note:—Circ indicates circumscribed; Lob, lobulated; Hetero, heterogeneous; Hyper, hyperintense; Hypo, hypointense; N/A, not available; Predom, predominantly; Y, yes; N, no.

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American Journal of Neuroradiology: 27 (3)
American Journal of Neuroradiology
Vol. 27, Issue 3
March, 2006
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Central Nervous System Extraosseous Ewing Sarcoma: Radiologic Manifestations of This Newly Defined Pathologic Entity
J.S. Pekala, S. Gururangan, J.M. Provenzale, S. Mukundan
American Journal of Neuroradiology Mar 2006, 27 (3) 580-583;

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Central Nervous System Extraosseous Ewing Sarcoma: Radiologic Manifestations of This Newly Defined Pathologic Entity
J.S. Pekala, S. Gururangan, J.M. Provenzale, S. Mukundan
American Journal of Neuroradiology Mar 2006, 27 (3) 580-583;
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