I am 9 weeks post op for renal cell carcinoma (partial nephrectomy) and i have a jp pump and a nephrosty tube. for how long?

Best to: Ask your surgeon who was there. Nine weeks with an external jp drain seems like a relatively long time, and I do not know if your nephrostomy is an external or an internal tube. I do not know the details of your surgery, but your surgeon would & could explain how long & why.

Await healing leak: Having a nephrostomy tube and jp drain for 9 weeks after a partial nephrectomy would be very unusual. I assume that this was because of a urine leak after surgery? Urine leaks, while rare, can occur, particularly if the tumor was large or very central in the kidney. However, your course is unusual and i would recommend you ask your surgeon specifically what the long term plan for management is.