Abstract
Purpose
Krukenberg tumor is a rare type of ovarian cancer with a poor prognosis, and little is known about its behavior during pregnancy.
Methods
A systematic review was conducted to identify pregnancies complicated by Krukenberg tumor, correlated to oncologic and neonatal outcomes (n = 35).
Results
Mean age of cases was 30.4 years, and the most common origin of primary cancer was the stomach (68.6 %) followed by the colon (14.3 %). The two most common presenting symptoms were abdominal/pelvic pain (51.4 %) and nausea/vomiting (48.6 %). Two-thirds of tumors were bilateral (65.7 %) and the average size was 16.7 cm. Ascites (45.7 %), carcinomatosis (25.7 %) and non-ovarian distant metastases (14.3 %) were found at the time of surgery. Chemotherapy was administered in 20 cases, with fetal exposure in two of these. The ovarian tumor was identified prior to the primary cancer diagnosis in all 28 cases. The overall number of live births was 27 (81.8 %). The median survival was 6 months after Krukenberg tumor diagnosis. In univariate analysis, decreased overall survival was associated with dyspnea, ascites, carcinomatosis, non-radical surgery for the primary cancer, and residual disease at surgery (all, p < 0.05). On multivariate analysis, dyspnea and carcinomatosis remained independent prognostic factors for decreased overall survival after Krukenberg tumor diagnosis (2-year overall survival rates, dyspnea 0 vs. 56.6 %, adjusted-hazard ratio [HR] 9.74, 95 % confidence interval [CI] 2.04–46.2, p < 0.01; and carcinomatosis, 0 vs. 58.1 %, adjusted-HR 7.95, 95 % CI 1.76–36.0, p < 0.01).
Conclusions
Our results showed that prognosis of Krukenberg tumor complicated pregnancies is extremely poor, however it may be improved if radical surgery is achievable.
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This study was funded by Ensign Endowment for Gynecologic Cancer Research (K.M.).
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All authors declare that there is no conflict of interest for the study.
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Ensign Endowment for Gynecologic Cancer Research.
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Michiko Kodama and Aida Moeini have contributed equally to the work.
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Kodama, M., Moeini, A., Machida, H. et al. Feto-maternal outcomes of pregnancy complicated by Krukenberg tumor: a systematic review of literature. Arch Gynecol Obstet 294, 589–598 (2016). https://doi.org/10.1007/s00404-016-4048-3
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DOI: https://doi.org/10.1007/s00404-016-4048-3