A friend of mine was recently diagnosed with mammary duct ectasia. Can you tell me more about this condition?
D001941:Breast Diseases / Q000209:etiology* / Q000628:therapy; D004108:Dilatation, Pathologic / Q000209:etiology / Q000628:therapy; D005260:Female; D006801:Humans; D042361:Mammary Glands, Human