Eccrine acrospiroma.
D006607:Adenoma, Sweat Gland / Q000648:ultrastructure*; D004439:Eccrine Glands / Q000473:pathology*; D006801:Humans; D008854:Microscopy, Electron; D013544:Sweat Gland Neoplasms / Q000648:ultrastructure*; D013545:Sweat Glands / Q000473:pathology*