Objective: To compare survival outcomes of minimally invasive surgery (MIS) and open surgery for radical hysterectomy (RH) in early cervical cancer patients with histologic subtypes of usual-type adenocarcinoma and adenosquamous carcinoma.
Methods: From two centers' cervical cancer cohorts, patients with 2009 FIGO stage IB1-IB2 who underwent RH between 2007 and 2020 were retrospectively identified. Patients with usual-type adenocarcinoma and adenosquamous carcinoma were included in the analysis after pathologic review according to the updated World Health Organization Classification of Tumors. Clinicopathologic characteristics and survival outcomes were compared in terms of open surgery or MIS.
Results: This study included 161 patients. No significant differences were noted in overall survival (OS; P = 0.241) and disease-free survival (DFS; P = 0.156) between patients with usual-type adenocarcinoma (n = 136) and those with adenosquamous carcinoma (n = 25). MIS RH group (n = 99) had a significantly smaller tumor size (P < 0.001), lesser pathologic parametrial invasion (P = 0.001), and lesser lymph node metastasis (P < 0.001) than open RH group (n = 62). MIS and open RH groups showed similar OS (P = 0.201) and 3-year DFS rate (87.9% vs. 75.1%; P = 0.184). In multivariate analysis, worse DFS was not associated with MIS (P = 0.589) but was associated with pathologic parametrial invasion (adjusted HR, 3.41; 95% CI, 1.25-9.29; P = 0.016). Consistent results were observed among patients with usual-type adenocarcinoma; MIS was not associated with worse DFS.
Conclusions: Comparable survival outcomes were found for MIS and open RH in early-stage cervical usual-type adenocarcinoma and adenosquamous carcinoma. Although MIS RH was not a poor prognostic factor, pathologic parametrial invasion was significantly associated with worse DFS in cervical usual-type adenocarcinoma and adenosquamous carcinoma.
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