Inclusion Criteria:  Patients aged > 16 years Any patient with histopathologically-confirmed BIA-ALCL (BASILICA-A arm only), or a clinical diagnosis of capsular contracture (BASILICA-C arm only) arising around a breast implant Any patient undergoing implant insertion surgery (BASILICA-N arm only) MDT recommendation for capsulectomy (BASILICA-A and C arm only) Patient consent for capsulectomy (BASILICA-A and C arm only)  Exclusion Criteria:  Inability to give informed consent MDT unable to make recommendation for surgery Previous implant insertion surgery (BASILICA-N arm only)