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

Which of the following definitions best describes the instance 'pN0 (kidney)'?

A. A International Federation of Gynecology and Obstetrics ovarian cancer stage value specification associated with TNM stage values of T1c, N0, and M0.
B. A pathologic lymph node stage for kidney according to AJCC 7th edition indicating that there is no regional lymph node metastasis.
C. A pathologic lymph node stage for kidney according to AJCC 7th edition indicating that there is regional lymph node metastasis.
D. A volumetric flow rate unit which is equal to one microliter volume through a given surface in one minute.

Answer: A pathologic lymph node stage for kidney according to AJCC 7th edition indicating that there is no regional lymph node metastasis.