@Ceptorbi - Fibroadenoma symptoms differ from malignant breast lump symptoms in a couple of ways. First, malignant lumps tend to feel hard and don't move around when pressed because they are attached to the underlying breast tissue. Also, the edges or borders of malignant lumps are irregular in shape while fibroadenoma tumors have regular borders. Nipple retraction occurs with malignant tumors, too, while it does not occur in fibroademomas. The way to be sure if a breast lump is benign or not of course is for a physician to examine it and perform various medical tests like ultrasound and a biopsy.