Does a lump always mean Cancer?
No. A lump can occur in any part of the body which may or may not contain cancer cells. Some of these lumps may grow to large sizes and produce ulcers. Because of this, they interfere with normal functions of nearby organs. However, they will not cause death and they can easily be removed by surgery and usually will not recur. They donot spread to other parts of the body. Such tumours are known as Benign tumours ie. harmless tumours. Cancer also can occur asa lump or tumour. A cancer is known as a malignant tumour. It is characterised specially by its potential to spread to other sites and to infiltrate the organ.
You haven’t made life easy but I assume that you are talking about a breast lump. The other thing you have not mentioned is your grandmother’s age. Assuming we are talking about breast cancer the risk of this increases with age. I cannot reassure you that the lump is benign, but I agree not all masses in the breast turn out to be malignant.
