Green discharge is M. Commonly seen with
Duct papilloma
Duct ectasia
Retention cyst
Fibroadenosis
Ans is 'b' ie Duct ectasia "A black or green discharge is usually due to duct ectasia and its complications." - Bailey & Love.Duct ectasia is dilatation of lactiferous ducts associated with periductal inflammation, the pathogenesis of which is unknown.
Nipple Discharge