Eccrine acrospiroma (syn: nodular hydratenoma, light celled hydratenoma, syringoepithelioma, solid cystic hydratenoma, ekrinnaya adenoma of the clear cell type) is usually a solitary intradermal, exophytic or mixed-type node 0.5-2 cm in diameter or larger, hemispherical in shape, of a dense elastic consistency , on a wide base, covered with unchanged skin, sometimes ulcerating.