Genital warts are a sexually transmitted disease caused by the human papillomavirus (HPV), characterized by small growths on the skin and mucous membranes. The recurrence rate is relatively high, so many patients are still concerned about recurrence after treatment. According to your description, you have undergone multiple photodynamic treatments and have not had new lesions in recent months. However, you found a smooth protrusion, which makes you worried. First, genital warts are usually raised growths on the surface of the skin with a rough texture, while the protrusion you described is smooth, which may not be genital warts. Secondly, you have undergone multiple treatments and examinations, and the doctor did not find new lesions, indicating that your condition may be under control. However, the virus of genital warts may be latent in the body, so regular follow-ups are very necessary. You can continue to observe this protrusion, and if it changes or enlarges, it is recommended to seek medical attention promptly. In addition, maintaining good personal hygiene and avoiding high-risk sexual behaviors can reduce the risk of recurrence. If you have any doubts or uncertain symptoms, it is best to consult a professional dermatologist. I hope you recover soon.