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

Which of the following definitions best describes the instance 'pT1 (kidney)'?

A. A pathologic primary tumor stage for kidney according to AJCC 7th edition indicating that the tumor is more than 10 cm and limited to the kidney.
B. 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.
C. A pathologic primary tumor stage for kidney according to AJCC 7th edition indicating that the tumor extends into major veins or perinephric tissues but not into the ipsilateral adrenal gland and not beyond the Gerota fascia.
D. 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.

Answer: 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.