Differential Diagnosis for Green Nipple Discharge
Single Most Likely Diagnosis
- Ductal Ectasia: This condition is characterized by the dilation of the milk ducts, which can cause a green or black nipple discharge. The discharge is often thick and may have a foul odor. Ductal ectasia is a common cause of nipple discharge, especially in women of reproductive age.
Other Likely Diagnoses
- Intraductal Papilloma: A small, benign tumor that grows in the milk ducts, which can cause a green or bloody nipple discharge. The discharge is often unilateral and may be accompanied by a palpable mass.
- Breast Abscess: A bacterial infection of the breast tissue, which can cause a green or yellowish nipple discharge, often accompanied by pain, swelling, and redness.
- Mastitis: An inflammation of the breast tissue, which can cause a green or yellowish nipple discharge, often accompanied by pain, swelling, and redness.
Do Not Miss Diagnoses
- Breast Cancer: Although less likely, breast cancer can cause a green or bloody nipple discharge, especially if it involves the ducts. It is essential to rule out breast cancer with imaging studies and biopsy if necessary.
- Paget's Disease: A rare form of breast cancer that affects the nipple and areola, which can cause a green or bloody nipple discharge, often accompanied by eczema-like changes to the skin.
Rare Diagnoses
- Galactorrhea: A rare condition characterized by the spontaneous flow of milk from the breast, which can cause a green or milky nipple discharge. This condition is often associated with hormonal imbalances or pituitary tumors.
- Fibrocystic Changes: A condition characterized by the formation of cysts and fibrous tissue in the breast, which can cause a green or cloudy nipple discharge. However, this condition is more commonly associated with breast pain and lumpiness.