TNM Classification: Cervical carcinoma

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T- Primary tumor

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TX - Primary tumor cannot be assessed

TO - No evidence of primary tumor

Tis - Carcinoma in situ

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T1 - Cervical carcinoma confined to uterus (extension to corpus should be disregarded)

          T1a    Invasive carcinoma diagnosed only by microscopy.  Stromal  invasion with a

                    maximum depth of 5.0mm measured from the base of the epithelium and a horizontal spread of 7.0mm or less. Vascular space involvement, venous or lymphatic, does not affect classification。

         T1a1   Measured stromal invasion 3.0mm or less in depth and 7.0mm or less in horizontal Spread.

         T1a2   Measured stromal invasion more than 3.0mm and not more than 5.0mm with a

                    horizontal spread 7.0mm or less.

         T1b     Clinically visible lesion confined to the cervix microscopic lesion greater than T1a/IA2.

         T1 b1  Clinically visible lesion 4.0cm or less in greatest dimension.

         T1b2   Clinically vixible lesion more than 4.0cm in greatest dimension.

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T2 -  Cervical carcinoma invades beyond uterus but not to pelvic wall or to lower third  of vagina

        T2a   Tumor without parametrial invasion

        T2b   Tumor with parametrial invasion

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T3 -  Tumor extends  to  pelvic wall  and/or involves  lower third  of vagina,  and/or causes hydronephrosis or non-functioning kidney

         T3a   Tumor involves lower third of vagina, no extension to pelvic wall

         T3b   Tumor extends to pelvic wall and/or causes hydronephrosis or non-functioning kidney

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T4 -  Tumor invades mucosa of bladder or rectum, and/or extends beyond true pelvis (bullous edema is not sufficient to classify a tumor as T4)

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N - Regional lymph nodes

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NX - Regional lymph nodes cannot be assessed

NO - No regional lymph node metastasis

N1 - Regional lymph node metastasis

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M - Distant metastasis

MX- Distant metastasis cannot be assessed 

MO- No distant metastasis

M1-  Distant metastasis