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General
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Terminology
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Epidemiology
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Etiology
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Clinical features
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Case reports
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Treatment
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Clinical images
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Mammogram, courtesy of Dr. Mark R. Wick

Gross description
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Gross images
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Nodular lesion

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Multiple nodules (fig 2)

Micro description
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Micro images
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Courtesy of Dr. Mark R. Wick

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Anastomosing pattern of slit-like spaces

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Spindle cells at margins of slit-like spaces

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Various images

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Clefts and anastomosing spaces in dense collagenous stroma (small blood vessel at arrow)

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With columnar cell lesion

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Clefts (but not endothelium) are CD31 negative

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Spindle cells (not ductal cells) are cytokeratin negative

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Vimentin+ spindle cells

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ER-beta positive

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CD34+

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With gynecomastia (A: vimentin, B: CD34)

Cytology description
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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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Additional references
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End of Breast - nonmalignant > Benign tumors / changes > Pseudoangiomatous stromal hyperplasia (PASH) of breast



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