The popularity of skin-sparing mastectomy (SSM) which preserves the breast skin envelope is increasing, but the risks and benefits of this approach are only beginning to emerge. A technique involving ultra-conservative SSM and immediate breast reconstruction (IBR) has been evaluated to establish the surgical and oncological sequelae of skin conservation. Between 1994-1998, 67 consecutive patients underwent 71 SSM and expander-assisted immediate latissimus dorsi (LD) breast reconstructions (follow up, 24.1 months; range, 2-52 months). Breast resection, axillary dissection and reconstruction were performed through a 5-6 cm circular peri-areolar 'keyhole' incision. Patients were discharged 6.5 days (range, 5-15 days) after the 3.9 h (range, 3.0-5.5 h) procedure, and expansion was completed by 4.0 months (range, 0-10 months). Local recurrence occurred in 3% of breasts at risk, skin envelope necrosis occurred in 10%, and contralateral surgery was required to achieve symmetry in 14%. SSM and IBR is an oncologically safe, minimal-scar procedure which can be performed by surgeons trained in 'oncoplastic' techniques. It results in low rates of local recurrence and complication, and reduces the need for contralateral surgery.