Can epididymitis recur after being cured?

Patient's question:

Patient Gender: Male
He developed epididymitis due to chlamydia. After taking medication for three weeks, the pain in the epididymis subsided, but the doctor found a lump there upon examination.
Could you please answer the following questions?
1. Is there still chlamydia in this lump?
2. Under what circumstances can epididymitis recur? Should chlamydia be treated again if it comes back?
3. Although it has healed, why do I still feel a slight pain in the epididymis sometimes?
Thank you to all the experts.

Doctor's answer:

Epididymitis can recur after treatment.