NCIt related terms : Eccrine spiradenoma; Spiradenoma, NOS;
NCIt definition : A benign epithelial neoplasm with eccrine or apocrine differentiation, arising from
the sweat glands. It usually presents as a solitary, well circumscribed, firm nodule
in the face and upper trunk. It is characterized by the presence of basaloid cells
forming nodules in the dermis. Cases of carcinoma arising from long standing spiradenomas
have been reported.;