Trichoepithelioma
Epidemiology and Etiology:
Common sites:
Gross features:
Histologic features:
Immunophenotype:
Marker: |
Sensitivity: |
Specificity: |
CK 15, 20 (focal) (neg in BCC) |
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CD34 (stroma) (neg in |
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Bcl-2 (only outermost
epithelial layer) (diffuse in |
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Ki-67 (normal) (increased in BCC) |
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Molecular features:
Other features:
References: