Fig. 2

Disease-free survival. Kaplan-Meier plot for patients according to their peritoneal disease status. Median DFS at 1 year was 82% for patients without peritoneal disease and 64% for patients after conversion, with a median DFS not reached in the negative group and 21.7 months (95% CI 7.9–35) in the converted group. In contrast, DFS at 1 year was only 20% in patients with persistent positive lavage cytology after systemic therapy