A new form of cancer could be triggered by a type of breast implant popular with British women, scientists are warning. At least 150 cases of the disease, called anaplastic large cell lymphoma (ALCL) of the breast, have been reported, including a handful in Britain. Nine in 10 cases of the disease – a cancer of the immune system – have been in women who have received breast implants with a textured outer shell, according to experts.