Stage IIIA2 includes: T3a, N0/N1, M0. T3a: T3a: Fallopian tube cancer with microscopic extrapelvic (above the pelvic brim) peritoneal involvement with or without positive retroperitoneal lymph nodes. N0: No regional lymph node metastasis. N1: Positive retroperitoneal lymph nodes only (histologically confirmed). M0: No distant metastasis. (AJCC 8th Ed.) [from NCI]