Table 2 FIGO Staging of endometrial carcinoma and adapted MRI findings^a

I

Tumour confined to uterus

 IA

≤50 % of myometrium

Abnormal SI in endometrial cavity or confined to inner half of myometrium

 IB

>50 % of myometrium

Extends into the outer half of myometrium

II

Cervical stromal invasion, but not extension beyond uterus

Disruption or focal thinning of cervical stroma

III

Local or regional spread

 IIIA

Serosa of uterus and/or adnexa

Disruption or irregular uterine contour caused by tumour; ovarian nodular tumour

 IIIB

Vagina or parametria

Direct tumour extension of upper vagina or/and parametrial tissues

 IIIC

Metastases to pelvic and/or paraaortic lymph nodes

 IIIC1

Pelvic nodes

Lymph nodes >8 mm in short axis

 IIIC2

Paraaortic nodes w/wo pelvic nodes

Lymph nodes >10 mm in short axis

IV

Bladder/bowel mucosa; or distant metastases

 IVA

Bladder/bowel mucosa

Tumour disrupts bladder or bowel muscle and invades mucosa; not bullous edema

 IVB

Metastases abdominal and extraabdominal; inguinal lymph nodes

Tumour deposits at distal sites including peritoneal mets, bladder, bone liver mets, and distal lymph node metastases