TNM and FIGO Staging of an Ovarian Carcinoma | Medicalalgorithms.com

Description

An ovarian carcinoma can be staged based on the nature of its involvement using the TNM or FIGO (International Federation of Gynecology and Obstetrics) systems.

Tumor Growth	T code
tumor limited to one ovary with intact capsule, no tumor on surface and negative peritoneal cytology	T1a
tumor limited to both ovaries with intact capsule, no tumor on surface and negative peritoneal cytology	T1b
tumor limited to one or both ovaries with at least on of the following: capsule ruptured, tumor on surface, positive peritoneal cytology	T1c
tumor involves uterus and/or fallopian tubes with negative peritoneal cytology	T2a
tumor involves other pelvic tissue with negative peritoneal cytology	T2b
tumor anywhere in pelvis with positive peritoneal cytology	T2c
microscopic tumor only beyond pelvis	T3a
macroscopic tumor beyond pelvis <= 2 cm in maximum diameter	T3b
macroscopic tumor beyond pelvis > 2 cm in maximum diameter OR metastases to regional lymph nodes (N1)	T3c
not assessed	Tx

Regional Lymph Nodes	N code
none	N0
metastases present	N1
not assessed	Nx

Distant Metastases	M Code
none	M0
present, including parenchymal liver; excludes metastses to peritoneum or liver capsule	M1
not assessed	Mx

TNM	FIGO Stage
T1a N0 M0	IA
T1b N0 M0	IB
T1c N0 M0	IC
T2a N0 M0	IIA
T2b N0 M0	IIB
T2c N0 M0	IIC
T3a N0 M0	IIIA
T3b N0 M0	IIIB
T3c N0 M0	IIIC
(any T) N1 M0	IIIC
(any T) (any N) M1	IV

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