Abstract
The authors describe a patient who presented with acute onset of a lower back fluctuant mass 12 years after breast reconstruction with a latissimus dorsi musculocutaneous flap and silicone gel implant. Aspiration and subsequent surgical exploration revealed this mass to be free-flowing silicone gel within a cavity that was confluent with the breast implant capsule through an axillary tunnel. Excision of the back cavity, explantation with subtotal capsulectomy, and implant replacement resolved the problem. Although distant migration of extracapsular silicone gel from the breast to the axilla, arm, abdomen, and groin has been described, the authors think this represents the first reported case of distant migration of silicone gel to the lower back.