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 washinsgs
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 tumour on the surfaces of abdominal organs, e.g. bowel, hepatic surface
- stage IIIb: tumour deposits <2 cm on organ surfaces
- stage IIIc: tumour deposits >2 cm and/or spread to local lymph nodes.
- stage IV: distant solid organ metastases, e.g. intrahepatic