What is the cause of left testicular dull pain?

Patient's question:

Patient Gender: Male
Main Symptoms: My left testicle has a dull ache
Onset Time: 1 year
Laboratory Test Results:

Doctor's answer:

Hello: There are many causes that can cause testicular pain, such as inflammation, stones, tumors, varicocele, etc. Do you have any other symptoms? It is recommended that you go to the hospital in time to identify the cause and receive targeted treatment!