The International Federation of Gynecology and Obstetrics (FIGO) staging system for carcinoma of corpus uteri is as follows:
- Stage IA - Tumor limited to endometrium
- Stage IB - Invasion to less than one half the myometrium
- Stage IC - Invasion to more than one half the myometrium
- Stage IIA - Endocervical glandular involvement only
- Stage IIB - Cervical stromal invasion
- Stage IIIA - Tumor invades serosa and/or adnexa and/or positive peritoneal cytology.
- Stage IIIB - Vaginal metastasis
- Stage IIIC - Metastases to pelvic and/or para-aortic lymph nodes
- Stage IVA - Tumor invasion of bladder and/or bowel mucosa
- Stage IVB - Distant metastases including intra-abdominal and/or inguinal lymph nodes.
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