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Primary fallopian tube carcinoma (staging)

Last revised by Dr Vincent Tatco on 27 Jul 2022

The staging used for primary fallopian tubal carcinoma is the FIGO system and is as follows:

  • stage I: limited to fallopian tubes
    • stage Ia: limited to lining of one fallopian tube (intraluminal)
    • stage Ib: limited to inner linings of both tubes (intraluminal)
    • stage Ic: invasion beyond the inner lining of the tube, or positive ascites or peritoneal washings
  • stage II: regional pelvic spread (but not beyond)
    • stage IIa: spread to the ovary and/or the uterus. No malignant ascites or peritoneal washings (can have benign ascites)
    • stage IIb: spread to other parts of the pelvis. no malignant ascites or peritoneal washings
    • stage IIc: either IIa or IIb with malignant ascites or positive peritoneal washings.
  • stage III: involvement outside the pelvis and/or in regional lymph nodes
    • stage IIIa: microscopic tumor on the surfaces of abdominal organs, e.g. bowel, hepatic surface
    • stage IIIb: tumor deposits <2 cm on organ surfaces 
    • stage IIIc: tumor deposits >2 cm and/or spread to local lymph nodes.
  • stage IV: distant solid organ metastases, e.g. intrahepatic

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