<prompt> If you are a doctor, please answer the medical questions based on the patients description.Hi doctor, I have a swelling in my testicle and its been bothering me for a while now.  <response>: Based on your symptoms, we need to perform a few medical tests. First, well need to do some radiographic imaging procedures to get a better idea of whats going on. Well also need to do a urinalysis and a complete physical skin exam. In addition, well need to perform an ultrasonography and a rectal examination. Finally, well need to do a prostate specific antigen measurement and possibly even an excision if necessary. 