Comparison of frequencies of qualitative indicators with OS and PFS in mCRC patients with synchronous and metachronous metastasis.

Comparison of frequencies of qualitative indicators with OS and PFS in mCRC patients with synchronous and metachronous metastasis.同步转移与异时转移转移性结直肠癌（metastatic colorectal cancer, mCRC）患者定性指标发生频率与总生存期（Overall Survival, OS）、无进展生存期（Progression-Free Survival, PFS）的对比分析