NCIt definition : Stage IIIC includes: T3c, N0/N1, M0. T3c: Ovarian cancer with macroscopic peritoneal
metastasis beyond the pelvis more than 2 cm in greatest dimension with or without
metastasis to the retroperitoneal lymph nodes (includes extension of tumor to capsule
of liver and spleen without parenchymal involvement of either organ). N0: No regional
lymph node metastasis. N1: Positive retroperitoneal lymph nodes only (histologically
confirmed). M0: No distant metastasis. (AJCC 8th Ed.);