tumor/ regional lymph node invasion/distant metastasis
The positive rate for CA 19-9 in primary tumor/ regional lymph node invasion/distant metastasis (TNM) - stage III/IV subgroup is higher than that in TNM-I/II subgroup.
The positive rate for CA 19-9 in primary tumor / regional lymph node invasion / distant metastasis ( TNM ) - stage III / IV subgroup is higher than that in TNM-I / II subgroup .