I am 66 years old, underwent a radical prostatectomy ...

I am 66 years old and underwent a radical prostatectomy six months ago, due to the adenocarcinoma. I had a good postoperative period, the healing was good, and the urinary function was reestablished to the satisfaction, although I had to live with a slight urinary incontinence. I have often gone to the urologist who operated on me. He has made the control through several examinations and guarantees that my picture is of normality in the considered conditions. However, despite this diagnosis, the truth is that I had a sequel: an edema in the inguinal region caused by lymph nodes, ie, in the groin. At first, I was very worried, thinking I had lymphoma. I consulted a clinician, and he told me that nothing indicated this to be true; that swelling was a normal reaction of the organism to surgery and that, over time, the problem would cease to exist. Not satisfied, I consulted an oncologist who, after a clinical examination and request for an ultrasonography, which he reviewed, broadly repeated the previous diagnoses. The fact is that time is passing, and I do not notice a substantial improvement. Doctors say there is no effective treatment that only time will solve. But I do not conform; I refuse to believe that Medicine does not have a cure for this problem that bothers me. I ask you for your opinion and if you think there is a possibility of a treatment, let me know what medical specialty (or, perhaps, physiotherapy) I have to resort to for a solution. Thank you very much in advance for your attention.