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Bone chapter (nontumor and tumor)
Other tumors of bone
Ewing sarcoma / primitive or peripheral neuroectodermal tumor (PNET)

Reviewer: Nat Pernick, M.D. (see Reviewers page)
Revised: 25 February 2014, last major update June 2005
Copyright: (c) 2003-2013, PathologyOutlines.com, Inc.

General
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Clinical features
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Xray description
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Radiology images
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Humerus xray - contributed by Dr. Mark R. Wick

Phalanx of foot xray - contributed by Dr. Mark R. Wick

Femur xray - contributed by Dr. Mark R. Wick

Metatarsal MRI - contributed by Dr. Mark R. Wick


Ulna xray - contributed by Dr. Mark R. Wick

Upper end of femur

Destruction of cortex

Subperiosteal defect

Poor prognostic factors
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Case reports
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Treatment
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Gross description
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Gross images
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Contributed by Dr. Mark R. Wick

26 year old man with Ewing sarcoma of knee

Micro description
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Micro images
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Small cell Ewing sarcoma

Large cell Ewing sarcoma

Neuroectodermal tumor

Extends between normal trabeculae


Quiz case

Univ Pittsburgh Case #103

Xray, MRI, H&E, EM

Xray, CT, H&E, PAS, CD99


Foot - contributed by Dr. Mark R. Wick

PNET - contributed by Dr. Mark R. Wick


Contributed by Dr. Mark R. Wick


Wilder reticulin stain

CD99 - contributed by Dr. Mark R. Wick

CD99

PAS stain - contributed by Dr. Mark R. Wick

PAS stain

Cytology images
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Touch imprint

Touch prep - contributed by Dr. Mark R. Wick

PNET FNAB - contributed by Dr. Mark R. Wick

PNET lung FNAB - contributed by Dr. Mark R. Wick

Positive stains
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Negative stains
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Molecular description
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Molecular / cytogenetics images
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Translocation FISH - contributed by Dr. Mark R. Wick

Electron microscopy description
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Electron microscopy images
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Electron micrograph

Differential diagnosis
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Additional references
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End of Bone chapter (nontumor and tumor) > Other tumors of bone > Ewing sarcoma / primitive or peripheral neuroectodermal tumor (PNET)


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