Objective: To determine whether IP port cytology predicts early recurrence and/or poor prognosis in patients with ovarian cancer who have completed primary therapy.
Methods: A prospective study of patients with advanced stage ovarian cancer undergoing IP port removal after debulking followed by IV/IP chemotherapy was performed. Ports were flushed with 10 cc of normal saline into ThinPrep fixative to be analyzed for cytology. Results were correlated with clinical factors and cancer outcomes. Survivals were calculated using Kaplan-Meier curves and compared using log-rank analysis.
Results: Effluent from 53 IP ports was analyzed, and patients were followed for a median of 62 months. Mean age was 58.5, with the majority of patients being white (90%), with stage 3 (62%), serous histology (87%). Seven (13.2%) patients had positive IP cytology. POS and NEG groups were similar with regard to age, BMI, stage, grade, and GOG status. Patients with POS results had increased risk of recurrence HR 3.2 (95%CI 0.4, 28.9), and death HR 6.5 (95%CI 0.7, 58.8), and were more likely to recur before 12 months, 71% vs. 22% (p = 0.007). Compared to NEG, POS conferred a shorter median survival with PFS of 32 vs. 7 months (p = 0.02) and OS of 84 vs. 42 months (p = 0.04).
Conclusions: IP port cytology is predictive of recurrence and survival in patients with ovarian cancer. This inexpensive test may serve as an adjunct to imaging and tumor markers to determine disease status at the completion of treatment. Further study should investigate how this may impact management.
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