The<unk>  widening is commonly believed to be a result of secretory stasis, including stagnant colostrum, which also causes periductal inflammation and fibrosis. However, because nonspecific<unk>  widening is common it might be also coincidental finding in many processes. Smokers seem more often affected by<unk><unk>  syndrome although the reported results are not entirely consistent. The correlation with smoking status appears weaker than for subareolar abscess. Correlation with the actual<unk>  widening is not known. Both<unk>  widening and<unk><unk>  syndrome are frequently bilateral, hence systemic causes are likely involved.
Duct ectasia of breast
Papillomatosis of breasts
Breast cyst
Adenomyoepithelioma of the breast
Breast eczema
Mucinous carcinoma of the breast
Keratin implantation cyst
Solitary cutaneous leiomyoma