Objective: To identify a subset of patients with stage IA2-IB1 cervical cancer and small tumors (≤2cm) who could be suitable for less radical surgery.
Methods: In a retrospective study, the medical records of women treated at nine hospitals in China were reviewed. Included women had undergone radical hysterectomy and pelvic lymph node dissection. The clinicopathologic factors associated with uterine isthmus invasion (UII), vaginal invasion (VI), parametrial invasion (PI), lymph node metastasis (LNM), and prognosis were analyzed.
Results: Overall, 1632 women were included. Tumor size greater than 2cm (measured postoperatively) was an independent predictor of VI (P=0.002), PI (P=0.001), and UII (P=0.021). Squamous cell carcinoma and superficial stromal invasion were associated with a low frequency of UII (P<0.001 for both). Among patients with adenocarcinoma, deep stromal invasion and lymphovascular space involvement (LVSI) were independently associated with UII (P=0.006 and P=0.004, respectively). Grade 2/3 disease (P=0.009), deep stromal invasion (P=0.015), and LVSI (P<0.001) were independently associated with LNM. LNM was the only independent adverse factor for survival (P<0.001).
Conclusion: Women with stage IA2-IB1 cervical cancer with low-risk factors could be candidates for large-scale prospective clinical trials of less radical surgery and lymphadenectomy omission.
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