Roundish tumor, benign, often separated from surrounding dermis by a cleft. Also called mixed tumor of the skin (usually contains areas of chondroid appearance). Two forms are recognized: tubular and branching (apocrine) and form with small tubular lumina (probably eccrine). The tumor cells are CEA positive.

Apocrine variant is more common; epithelium is high, basophilic, two layered epithelium; forming duct-like and cystic structures and epithelial nests. The outer layer of the ducts is vimentin positive. Stroma contains mucin and often is of chondroid appearance. Epithelium sometimes shows decapitation secretion.

Eccrine variant consists of roundish tubules lined with single layer of epithelial cells. Stroma contains mucin; chondroid changes are less apparent than in apocrine type.