Microcystic adnexal carcinoma – low magnification
Adnexal tumor with eccrine and follicular differentiation
Superficial and deep dermal tumor
Poorly circumscribed due to its infiltrative nature
Dense and sclerotic stroma extending deeply
Microcystic adnexal carcinoma
LEGEND
Tadpole-shaped sweat ducts composed of two layers of flattened cuboidal epithelial cells (similar to syringoma)
Microcystic adnexal carcinoma
Nests of basaloid cells characteristic of the follicular differentiation of this tumor
Microcystic adnexal carcinoma
LEGEND
Horn cysts characteristic of follicular differentiation
Microcystic adnexal carcinoma
LEGEND
Sweat ducts in infiltrative trabecular cords extending deeply (poorly circumscribed tumor)
Dense and sclerotic stroma
