Oncological outcomes
The 5-year DFS was significantly worse in the RFA group than in the open
surgery group (72.3% vs. 92.9%, P = 0.03; Figure 1). Similarly,
the RFA group also had a higher rate of local recurrence (27.7%vs. 7.1%, P = 0.03). However, the two groups had similar 5-year
OS rates (86.2% vs. 78.6%; P= 0.26). (Table 2)
Analysis of patients with invasion of the anterior commissure indicated
the two groups had no significant difference in 5-year DFS, although
there was a trend for poorer survival in the RFA group (67.6%vs. 88.9%, P = 0.09; Figure 2). The 5-year OS rates of the two
groups were also comparable (88.2% vs. 83.3%, P = 0.58; Table
3).