The FIGO staging for carcinoma of the corpus uteri has been applied to uterine sarcoma.[1]

Stage I

Stage I sarcoma is confined to the corpus uteri. This stage accounts for 50% of all presentations.

• Stage IA: tumor limited to endometrium.
• Stage IB: invasion to less than 50% of the myometrium.
• Stage IC: invasion to more than 50% of the myometrium.

Stage II

Stage II uterine sarcoma means the cancer has involved the corpus and the cervix but has not extended outside the uterus.

• Stage IIA: endocervical glandular involvement only.
• Stage IIB: cervical stromal invasion.

Stage III

Stage III uterine sarcoma means extension outside of the uterus but confined to the true pelvis.

• Stage IIIA: tumor invades serosa and/or adnexae and/or positive peritoneal cytology.
• Stage IIIB: metastases to pelvic and/or para-aortic lymph nodes.

Stage IV

Stage IV uterine sarcoma means involvement of the bladder or bowel mucosa or metastasis to distant sites.

• Stage IVA: tumor invasion of bladder and/or bowel mucosa.
• Stage IVB: distant metastases, including intra-abdominal and/or inguinal lymph nodes.

References

1. Shepherd JH: Revised FIGO staging for gynaecological cancer. Br J Obstet Gynaecol 96 (8): 889-92, 1989.  [PUBMED Abstract]
   
   

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