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Renal Cell Cancer Treatment (PDQ®)

  • Updated: 02/21/2014

Table 1. Primary Tumor (T)a

aReprinted with permission from AJCC: Kidney. In: Edge SB, Byrd DR, Compton CC, et al., eds.: AJCC Cancer Staging Manual. 7th ed. New York, NY: Springer, 2010, pp 479-89.
TXPrimary tumor cannot be assessed.
T0No evidence of primary tumor.
T1Tumor ≤7 cm in greatest dimension, limited to the kidney.
T1aTumor ≤4 cm in greatest dimension, limited to the kidney.
T1bTumor >4 cm but not >7 cm in greatest dimension, limited to the kidney.
T2Tumor >7 cm in greatest dimension, limited to the kidney.
T2aTumor >7 cm but ≤10 cm in greatest dimension, limited to the kidney.
T2bTumor >10 cm, limited to the kidney.
T3Tumor extends into major veins or perinephric tissues but not into the ipsilateral adrenal gland and not beyond Gerota fascia.
T3aTumor grossly extends into the renal vein or its segmental (muscle containing) branches, or tumor invades perirenal and/or renal sinus fat but not beyond Gerota fascia.
T3bTumor grossly extends into the vena cava below the diaphragm.
T3cTumor grossly extends into the vena cava above the diaphragm or invades the wall of the vena cava.
T4Tumor invades beyond Gerota fascia (including contiguous extension into the ipsilateral adrenal gland).