Medline: 1517791

Journal of Clinical Oncology 10(9): 1479-1484, 1992.

Impact on survival of surgically defined favorable responses to salvage intraperitoneal chemotherapy in small-volume residual ovarian cancer.

Markman M, Reichman B, Hakes T, et al.

Abstract:

Purpose:
To evaluate the impact on survival of the attainment of surgically defined favorable responses (S-R) to salvage intraperitoneal (IP) chemotherapy after initial systemic cytotoxic drug delivery.

Patients and Methods:
We examined the survival of patients who were treated on one of three phase II IP trials that were conducted at the Memorial Sloan-Kettering Cancer Center. A total of 58 patients whose largest residual tumor masses measured less than or equal to 0.5 cm in maximum diameter at the initiation of this salvage therapy were assessable for response, 28 of whom (48%) demonstrated a S-R, which included 19 (33%) who achieved a surgically defined complete response (S-CR).

Results:
With a median follow-up of 43+ months (range, 33+ to 58+ months) from the initiation of IP therapy, 12 of 19 (63%) have recurred. The median duration of S-CR for the 10 patients with microscopic residual disease was 32 months compared with 15 months for the nine patients with macroscopic residual disease (largest tumor mass less than or equal to 0.5 cm; P greater than .1). For patients with microscopic residual disease who experienced a S-CR (n = 10) after salvage IP therapy, the median overall survival from the initiation of therapy has not been reached, but will exceed 4 years compared with a 25-month median survival for the nonresponding patients (n = 13; P = .004). The median survival for the 18 patients with small-volume macroscopic disease who responded to therapy was 40 months compared with 19 months for the nonresponders (P = .009).

Conclusion:
Although the results of this evaluation are encouraging and suggest that the attainment of a S-R, particularly a S-CR, after IP chemotherapy may result in a clinically meaningful favorable impact on survival, a randomized controlled trial will be required to address definitively this important issue.


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Dr. G. Quade

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