Author: A/Prof Patrick Emanuel, Dermatopathologist, Auckland, New Zealand, 2014.
Eccrine papillary adenomas are benignsweat gland tumours that have been described in wide range of anatomic sites and age groups.
Histology of eccrine papillary adenoma
In eccrine papillary adenoma, sections show a well-circumscribeddermaltumour set in a sclerotic stroma (figure 1).
The tumour forms tubular and tubulo-papillary structures (figures 2, 3). The ducts are mainly lined by 2 or more cell layers of bland epithelial cells with limited mitotic activity. Some cells have an eosinophilic cytoplasm.