Abstract

PurposeThis study aimed to analyze the clinicopathological features, treatment, and feto-maternal outcomes of pregnancy complicated by malignant ovarian germ cell tumors (MOGCTs), to increase the awareness on this condition.Patients and MethodsWe retrospectively reviewed the medical records of patients diagnosed with MOGCTs during pregnancy, who were treated and followed-up at Peking Union Medical College Hospital from January 2000 to December 2017. The demographic characteristics, pathological features, treatment and prognosis were analyzed.ResultsThe histological subtypes varied in 14 patients (dysgerminoma, n=1; immature teratoma, n=4; yolk sac tumor, n=6; and mixed germ cell tumors, n=3). Ten (71.4%) patients, including three who opted for conservative therapy until childbirth, one who only received salvage chemotherapy during pregnancy, and six who underwent cystectomy or unilateral salpingo-oophorectomy during pregnancy, desired fetal preservation. After undergoing surgery, four patients chose surveillance instead of timely adjuvant chemotherapy. Eight patients delivered their babies, and the preterm delivery rate was 50.0%. One newborn died of premature birth. The median follow-up period was 44 (range: 13 to 86) months. During the current study period, 12 patients had survived and did not report any diseases. However, two died due to disease progression.ConclusionPregnant women with MOGCTs had favorable outcomes. However, when a malignant tumor is suspected, surgery cannot be avoided. Thus, instead of timely postoperative adjuvant chemotherapy, close surveillance may be an acceptable alternative for pregnant women with low-risk MOGCTs.

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