How many stages of breast cancer are there in general? Stage I: Primary tumor less than 2 cm and no lymph node metastasis Stage II: Primary tumor greater than 2 cm with axillary lymph node metastasis and active lymph nodes Stage III: Primary tumor greater than 5 cm with axillary lymph node metastasis and fixed lymph nodes Stage IV: Primary tumor of any size with supraclavicular or subclavicular lymph node metastasis Distant metastasis