Inclusion criteria
carcinoma, tumour
IN SITU CARCINOMA, CARCINOMA, TUMOUR

all patients > 18 years of age undergoing mastectomy and/or axillary lymph node dissectionbe irrespective of the nature of the primary tumour: prophylactic, risk reducing, benign, in situ carcinoma and invasive primary or recurrent carcinoma will be eligible, irrespective of preoperative systemic therapy.