Table 1. Primary Tumor (T)a

TXPrimary tumor cannot be assessed.
T0No evidence of primary tumor.
TaPapillary noninvasive carcinoma.
TisCarcinoma in situ.
T1Tumor invades subepithelial connective tissue.
T2Tumor invades the muscularis.
T3(For renal pelvis only) Tumor invades beyond muscularis into peripelvic fat or the renal parenchyma T3. (For ureter only) Tumor invades beyond muscularis into periureteric fat.
T4Tumor invades adjacent organs, or through the kidney into the perinephric fat.

aReprinted with permission from AJCC: Renal pelvis and ureter. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 491-6.

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