Gyn-Onk

IA Invasive carcinoma that can be diagnosed only by microscopy, with maximum depth of invasion <5 mm

IA1 Measured stromal invasion <3 mm in depth

IA2 Measured stromal invasion ≥3 mm and <5 mm in depth

IB Invasive carcinoma with measured deepest invasion ≥5 mm (greater than stage IA), lesion limited to the cervix uteri

⚬ IB1 Invasive carcinoma ≥5 mm depth of stromal invasion and <2 cm in greatest dimension
⚬ IB2 Invasive carcinoma ≥2 cm and <4 cm in greatest dimension
⚬ IB3 Invasive carcinoma ≥4 cm in greatest dimension

The carcinoma invades beyond the uterus, but has not extended onto the lower third of the vagina or to the pelvic wall

IIA Involvement limited to the upper two-thirds of the vagina without parametrial involvement
⚬ IIA1 Invasive carcinoma <4 cm in greatest dimension
⚬ IIA2 Invasive carcinoma ≥4 cm in greatest dimension

IIB With parametrial involvement but not up to the pelvic wall

The carcinoma involves the lower third of the vagina and/or extends to the pelvic wall and/or causes hydronephrosis or non-functioning kidney and/or involves pelvic and/or paraaortic lymph nodes

IIIA Carcinoma involves the lower third of the vagina, with no extension to the pelvic wall

IIIB Extension to the pelvic wall and/or hydronephrosis or non-functioning kidney

IIIC Involvement of pelvic and/or paraaortic lymph nodes, irrespective of tumor size and extent (with r (maging) and p (pathology) notations)
⚬ IIIC1 Pelvic lymph node metastasis only
⚬ IIIC2 Paraaortic lymph node metastasis

The carcinoma has extended beyond the true pelvis or has involved (biopsy proven) the mucosa of the bladder or rectum

• IVA Spread of the growth to adjacent organs
• IVB Spread to distant organs