FIGO Stage IB

**Semantic type:** Classification

**Definition:** A FIGO stage term that applies to gynecologic cancers. For cervical cancer, it refers to invasive cancer that is clinically visible and is confined to the cervix or it is diagnosed microscopically and the stromal invasion is more than 5.00 mm and the horizontal spread is more than 7.00 mm; for endometrial cancer, it refers to cancer that is confined to the uterine body and invades one-half or more of the myometrium.

**Synonyms:** - Stage IB