OBJECTIVES:
Primary
* Assess the contribution of MRI in accurately determining tumor size in women with ductal breast carcinoma in situ (DCIS).
Secondary
* Evaluate the sensitivity of MRI in detecting DCIS.
* Evaluate the contribution of mammography in accurately determining tumor size.
* Compare the contribution of MRI vs mammography in assessing tumor extension.
* Compare the contribution of MRI vs mammography in assessing dense breasts.
* Evaluate the morphology of DCIS by MRI.
* Evaluate the curve of dynamic MRI in assessing DCIS.
* Evaluate the impact of nuclear grade of DCIS by MRI.
* Evaluate the rate of revision surgery.
OUTLINE: Patients undergo clinical examination, mammography, ultrasound imaging, unilateral breast MRI, and tissue sampling.
