DUCTAL CARCINOMA IN-SITU

The incidence of ductal carcinoma in situ (DCIS) has increased signifi cantly in the last 2 decades, due to the diagnosis of asymptomatic can cers by screening mammography. These cancers are usually diagnosed by the presence of calcification on mammography. Histologic classificatio n of these tumors is controversial, and established and proposed class ification systems are reviewed. The role of breast conservation in the treatment of many of these lesions is generally accepted, although ar eas of debate regarding its application in these patients persists.