Cervical cancer stages
Staging of cervical cancer is very important, as cancer cervix treatment and survival rates show great difference from stage to another , as in early stages of cervical cancer is curable and so it also has a good prognosis.
There are different ways of cancer cervix staging , but the most trusted and globally used is the FIGO staging, that classifiy cancer cervix from stage zero up to stage 4.
Stage zero: that stage equal to CIN (cervical intra epithial neoplsia ) , which mean the cancer is still cells no more.
Stage 1 : That stage the cancer is confined to the cervix and it is subdivided into
- Stage 1a: That stage can not be clinically diagnosed and it diagnosed only by microscope , that stage also subdivided into
Stage 1a1 : The cancer cervix is invade 3mm or less in cervix depth
stage 1a2: The cancer cervix , invade from 3-5 mm in cervix depth
- Stage 1b: That stage the invasion more than 5mm in cervix depth , but it also subdivided according to cancer size into
Stage 1b1 : cancer size is 4 cm
Stage 1b2 : cancer size more than 4 cm
Stage 2 : In that stage the cancer start to spread , that stage subdivided into
- Stage 2 a: cancer spread to vagina , but not involving lower one third
- Stage 2 b: cancer spread to parametrium -ligament support cervical lateral borders to pelvis bony wall- , but not reaching lateral pelvic walls.
Stage 3 : That stage also sub divided into
- Stage 3 a : cancer spread to vagina , involving lower one third.
- Stage 3 b : cancer spread to parametrium , reaching lateral pelvic walls.
Stage 4: That stage subdivided into
- Stage 4 a: cancer spread to urinary bladder or rectum
- stage 4 b: cancer spread distant mostly to lung , liver , bone and brain .
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