The difference between benign and malignant testicular swelling is mainly the growth rate, growth pattern, general shape of the tumor and other aspects. 1. growth rate: benign testicular mass generally grows slowly, malignant testicular mass generally grows faster. 2. Mode of growth: benign testicular tumors generally show exophytic and expansive growth, and malignant testicular tumors generally show infiltrative growth. 3. Tumor morphology: benign testicular masses are usually soft, non-adhesive to the surrounding tissues, with clear boundaries and can be pushed, while malignant testicular masses are usually hard, adhesive to the surrounding tissues and cannot be pushed. 4. Others: benign testicular masses usually do not metastasize, do not recur after surgery, and have less impact on the body; malignant testicular masses usually metastasize at an early stage, are prone to recur after surgery, and have a greater impact on the whole body. If there is a testicular swelling, you should consult the doctor in time to get a clear diagnosis and early treatment, so as not to delay the condition.