Necessity Of Long Follow-Up Schedule After Surgery And Partial Nephrectomy For Patients With T1 Renal Cancer.

e15521 Background: Almost renal cancers are renal cell carcinoma (RCC). Short term treatment results are excellent with 90% or more disease specific and overall survival at 5year. Follow up schedule of NCCN guideline for low risk group was up to 5 years after surgery. Although, we have experienced late recurrence in such a low risk cases. Therefore, we examined the recurrence of T1 and T2 renal carcinoma in our institute, retrospectively. Methods: Between March 1997 and September 2009, 580 patients with renal carcinoma were undergone surgical excision of renal tumor at Chiba University Hospital. In these cases,349 patients were T1 without metastasis. We analyzed the clinopathological deta of these 349 patents. Univariate and multivariate analysis were conducted to identify the prognostic factor of T1a or T1b patients with surgical excision. Results: During follow up, 5, 10, 15 and 20 years overall survival rate(OS) of T1a were 98.1%, 98.1%, 90.6% and 90.6%, respectively. Those of T1b were 95.8%, 92.7%, 90...