Current imaging strategies for the evaluation of uterine cervical cancer

Table 1 Uterine cervical cancer classification system (as proposed by the International Federation of Gynecology and Obstetrics, 2009)

Stage	Sub-stage	Sub-stage
(description)	(description)	(description)
In situ
I	IA	IA1
Tumor confined to the cervix (may extend to the uterine corpus)	Miscroscopic tumor: Depth of invasion ≤ 5 mm, horizontal spread ≤ 7 mm	Depth of invasion ≤ 3 mm, horizontal spread ≤ 7 mm
		IA2
		Depth of invasion > 3 mm and ≤ 5 mm, horizontal spread ≤ 7 mm
	IB	IB1
	Macroscopically visible tumor	Lesion of maximal diameter ≤ 4 cm
		IB2
		Lesion of maximal diameter > 4 cm
II	IIA	IIA1
Cervical carcinoma extends to the upper vagina or parametrium	Cervical cancer extents to the upper 2/3 of the vagina	Lesion of maximal diameter ≤ 4 cm
		IIA2
		Lesion of maximal diameter > 4 cm
	IIB
	Tumor invades parametrial space (uni- and/or bilateral)
III	IIIA
Cervical cancer invades pelvic sidewall and/or lower 1/3 vagina and/or causes hydronephrosis	Tumor invades lower 1/3 of vagina
	IIIB
	Tumor invades pelvic wall and/or ureter causing hydronephrosis
IV	IVA
Cervical cancer invades adjacent pelvic organs and/or extending distally (beyond the pelvis)	Bladder and/or rectal mucosa invasion
	IVB
	Distant metastasis, peritoneal or paraaortic node involvement