A rare subtype of ALCL has been identified in women who have textured silicone breast implants (protheses). This is known as breast implant associated anaplastic large cell lymphoma, or BIA-ALCL. It can occur as a result of breast reconstruction after a diagnosis of breast cancer or as a result of cosmetic surgery using textured silicone implants. BIA-ALCL initially occurs in the fluid contained within the scar capsule surrounding the implant, rather than the breast tissue itself. The tumor initially manifests with swelling of the breast due to fluid accumulation around the implant. The disease may progress to invade the tissue surrounding the capsule, and if left untreated may progress to the axillary lymph nodes.