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See subtypes below: ancientangiosarcomacellularepithelioidmicrocystic-reticularpigmentedplexiformpsammomatous melanotic

General
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Clinical features
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Malignant transformation
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Treatment
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Clinical images
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Skin, courtesy of Dr. Mark R. Wick

Gross description
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Gross images
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Well circumscribed

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Courtesy of Dr. Mark R. Wick

Micro description
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Micro images
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Various images



Images courtesy of Dr. Mark R. Wick:

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Verocay bodies

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GFAP

Positive stains
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Negative stains
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Electron microscopy description
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Differential diagnosis
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Ancient schwannoma

General
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Case reports
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Gross images
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Case of the Week #334:

Well circumscribed tumor

Cut section with variegated appearance, cystic areas, hemorrhage and calcification

Micro images
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Various images

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Hypopharyngeal tumor

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Thigh mass mimicking malignancy

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Abdominal wall mass

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Ancient change, courtesy of Dr. Mark R. Wick



Case of the Week #334:

Encapsulated mass with calcification

Hypercellular and hypocellular areas

Myxoid change

Hyalinized blood vessels

Enlogated cells with cigar shaped nuclei


Hypercellular areas with palisading

Hyalinized blood vessels

Cystic areas

Cystic areas and blood vessels


Areas of ossification

S100




Angiosarcoma in schwannoma

General
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Case reports
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Micro images
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Various images

Differential diagnosis
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Cellular schwannoma

General
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Case reports
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Micro images
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Site unknown

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Nasal cavity

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Cellular type, courtesy of Dr. Mark R. Wick




Epithelioid malignant change

General
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Microcystic-reticular variant

General
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Case reports
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Gross description
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Micro description
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Micro images
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GI tract

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Colon

Positive stains
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Negative stains
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Electron microscopy images
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Irregular cell borders, elongated nuclei




Pigmented schwannoma

General
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Case reports
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Gross images
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Omental tumor

Micro images
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Omental tumor

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Pigmented, courtesy of Dr. Mark R. Wick

Positive stains
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Negative stains
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Plexiform schwannoma

General
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Case reports
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Gross images
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Courtesy of Dr. Mark R. Wick

Micro description
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Micro images
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Plexiform architecture

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Nuclear palisading

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Cellular areas

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S100

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Various images

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Plexiform

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Courtesy of Dr. Mark R. Wick

Positive stains
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Differential diagnosis
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Psammomatous melanotic schwannoma

General
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Terminology
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H&E

Various images

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Courtesy of Dr. Mark R. Wick

End of Soft Tissue > Peripheral nerve tumors > Schwannoma



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