If they evade the body’s immune defenses, which include natural killer cells circulating in both the blood and the lymph fluids, these malignant cells can colonize vital organs, such as the liver, lungs, and brain. There they can proliferate and spread again, after making these organs cancerous.
इसलिए, उत्तरजीविता की एक कुँजी है स्तन कैंसर के विकास के आरंभ में ही उसका पता लगाना, इससे पहले कि उसे फैलने का मौक़ा मिले ।