Task: Instance Description Understanding (ontology: Sciences/Computer_Science)

Which of the following definitions best describes the instance 'pT2 (kidney)'?

A. A pathologic primary tumor stage for kidney according to AJCC 7th edition indicating that the tumor is more than 7 cm in greatest dimension and limited to the kidney.
B. A pathologic primary tumor stage for kidney according to AJCC 7th edition indicating that the tumor grossly extends into the renal vein or its segmental (muscle containing) branches, or the tumor invades perirenal and/or renal sinus fat (peripelvic) fat but not beyond Gerota fascia.
C. A pathologic primary tumor stage for kidney according to AJCC 7th edition indicating that the tumor is 7 cm or less in greatest dimension and limited to the kidney.
D. A pathologic primary tumor stage for kidney according to AJCC 7th edition indicating that there is no evidence of primary tumor.

Answer: A pathologic primary tumor stage for kidney according to AJCC 7th edition indicating that the tumor is more than 7 cm in greatest dimension and limited to the kidney.