From Standard of Care
Accounts for 6.8% of breast disorders.
Despite its frequency only 5% of patients have a significant underlying disease process.
Pathologic process is considered to be present if discharge is spontaneous, from a single duct, persists or has gross or occult blood.
In women who have breast cancer and have nipple discharge as the only symptom 3% are younger than 40 years, 10% 40-60 years of age and 32% are older than 60 years.