See your GP if concerned about breast lumps
>>While most breast lumps, particularly in younger women, are not caused by cancer, finding a lump does cause a lot of worry. It’s very important to see your GP as soon as possible after finding a lump so that an accurate diagnosis can be made, as fortunately seems to have happened in your sister’s case.
However, breast cysts are benign and are one of the most common causes of breast lumps.