ERBB2 and metastatic malignant neoplasm in the lymph nodes: However, no significant differences were observed between the patients from Centre 1 and Centre 2 regarding age, CTmax, CTmean, short tumour diameter, SUVpeak, MTV, TLG, menopausal status, lymph node metastasis, ER status, PR status or HER2 status (all P > 0.05).