Eccrine Spiradenoma

Epidemiology and Etiology:

Common sites:

Gross features:

Histologic features:

• well-demarcated intradermal nodule
• no connection to the epidermis
• 2 cell types:
• cells with small dark nuclei
• larger cells with pale-staining nuclei
• mitoses uncommon
• dyskeratosis uncommon

Immunophenotype:

Marker:

Sensitivity:

Specificity:

Molecular features:

Other features:

References:

• Barnhill 2004