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General
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Epidemiology
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Sites
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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 spot film, courtesy of Dr. Mark R. Wick

Gross description
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Gross images
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Firm tumor with irregular borders

Circumscribed pinkish-white mass

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Courtesy of Dr. Mark R. Wick

Dense homogenous tumor
with infiltrating margins

Micro description
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Micro images
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Core biopsy

Clusters of tumor cells

Abundant eosinophilic, granular cytoplasm


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Courtesy of Dr. Mark R. Wick

Infiltration into fat

PAS+


Beneath squamous epithelium (not necessarily breast): H&E and S100

Mild nuclear pleomorphism

Malignant tumor (lung)


With DCIS and invasive ductal carcinoma

S100+

S100+ tumor cells and myoepithelial cells

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S100, courtesy of Dr. Mark R. Wick



Contributed by Dr. Oleksandr Grygoruk, Boris Hospital and Medical Center, Kiev (Ukraine)

Cytology description
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Cytology images
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FNAB, courtesy of Dr. Mark R. Wick

Positive stains
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Negative stains
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Electron microscopy descriptions
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Differential diagnosis
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Additional references
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End of Breast - nonmalignant > Benign tumors / changes > Granular cell tumor



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