Stage I includes: (T1, N0, M0); IA (T1a, N0, M0); IB (T1b, N0, M0); IC (T1c, N0, M0). T1: Tumor limited to the fallopian tube(s). T1a: Tumor limited to one tube, without penetrating the serosal surface; no ascites. T1b: Tumor limited to both tubes, without penetrating the serosal surface; no ascites. T1c: Tumor limited to one or both tubes with extension onto or through the tubal serosa, or with malignant cells in ascites or peritoneal washings. N0: No regional lymph node metastasis. M0: No distant metastasis. (AJCC 6th and 7th eds.) [from NCI]