A RF coil array is provided for imaging a chest wall of a patient including a breast. The RF coil array includes a rigid cup-shaped element and a flexible, substantially flat portion. The rigid cup-shaped element is sized and dimensioned to receive a small breast, such as a post mastectomy breast or a male breast, and the flexible portion is configured to be conformed to the patient adjacent the breast to allow for imaging of the breast, and adjacent areas while facing the chest wall.