2002 American Joint Committee on Cancer (AJCC) TNM Staging System for Ovarian Cancer

Tx: Primary tumor cannot be assessed
T0: No evidence of primary tumor
T1 (I): Tumor limited to ovaries (one or both)
  T1a (Ia): Tumor limited to one ovary; capsule intact, no tumor on ovarian surface. No malignant cells in ascites or peritoneal washings*
  T1b (IB): Tumor limited to both ovaries; capsules intact, no tumor on ovarian surface. No malignant cells in ascites or peritoneal                      washings*
  T1c (IC): Tumor limited to one or both ovaries with any of the following: capsule ruptured, tumor on ovarian surface, malignant cells in                     ascites, or peritoneal washings*
T2 (II): Tumor involves one or both ovaries with pelvic extension and/or implants
  T2a (IIa): Extension and/or implants on uterus and/or tube(s) No malignant cells in ascites or peritoneal washings
  T2b (IIb): Extension to and/or implants on other pelvic tissues. No malignant cells in ascites or peritoneal washings
  T2c (IIc): Pelvic extension and/or implants (T2a orT 2b) with malignant cells in ascites or peritoneal washings
T3 (III): Tumor involves one or both ovaries with microscopically confirmed peritoneal metastasis outside the pelvis
  T3a (IIIa): Microscopic peritoneal metastasis beyond pelvis (no macroscopic tumor)
  T3b (IIIb): Macroscopic peritoneal metastasis beyond pelvis 2 cm or less in greatest dimension
  T3c (IIIc): Peritoneal metastasis beyond pelvis more than 2 cm in greatest dimension and/or regional lymph node metastasis
T4 (IV): Distant metastasis (excludes peritoneal metastasis)

NX: Regional lymph nodes cannot be assessed
N0: No regional lymph node metastasis
N1: Regional lymph node metastasis

Stage I: T1 N0 M0
  Stage IA: T1a N0 M0
  Stage IB: T1b N0 M0
  Stage IC: T1c N0 M0
Stage II: T2 N0 M0
  Stage IIA: T2a N0 M0
  Stage IIB: T2b N0 M0
  Stage IIC: T2c N0 M0
Stage III: T3 N0 M0
  Stage IIIA: T3a N0 M0
  Stage IIIB: T3b N0 M0
  Stage IIIC: T3c N0 M0 or Any T N1 M0
Stage IV: Any T Any N M1