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Ovarian cancer staging

Dr Praveen Jha and Radswiki et al.

The most commonly adopted staging staging system for ovarian cancer is the FIGO staging system

It is as follows:

stage I : tumour limited to the ovaries
- stage Ia : tumour limited to one ovary, no malignant ascites / negative peritoneal washings
- stage Ib : tumour limited to both ovaries, no malignant ascites / negative peritoneal washings
- stage Ic : stage Ia or Ib with malignant ascites / positive peritoneal washings
stage II : tumour involves one or both ovaries with pelvic extension
- stage IIa : extension or implants on the uterus or fallopian tubes, no malignant ascites / negative peritoneal washings
- stage IIb : extension to other pelvic tissues, no malignant ascites / negative peritoneal washings
- stage IIc : stage IIa or IIb with malignant ascites / positive peritoneal washings
stage III : tumour involves one or both ovaries with peritoneal implants outside the pelvis or with retroperitoneal lymph node metastasis
- stage IIIa : microscopic peritoneal metastasis beyond the pelvis
- stage IIIb : macroscopic peritoneal metastasis beyond the pelvis 2 cm or less
- stage IIIc : peritoneal metastasis beyond the pelvis more than 2 cm or regional lymph node metastasis
stage IV : distant metastases including liver parenchyma

References

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1. Woodward PJ, Hosseinzadeh K, Saenger JS. From the archives of the AFIP: radiologic staging of ovarian carcinoma with pathologic correlation. Radiographics. 24 (1): 225-46. doi:10.1148/rg.241035178 - Pubmed citation
2. Forstner R, Hricak H, Occhipinti KA et-al. Ovarian cancer: staging with CT and MR imaging. Radiology. 1995;197 (3): 619-26. Radiology (abstract) - Pubmed citation