Are fertility drugs a risk factor for persistent trophoblastic tumour?

Author： Petignat Patrick Vassilakos Pierre Campana Aldo

ISSN： 1460-2350

Source： Human Reproduction, Vol.17, Iss.6, 2002-06, pp. : 1610-1615

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Abstract

BACKGROUND: The introduction of ovulation-inducing drugs has raised concern that women exposed to these therapies may be at increased risk of cancer. We assessed the potential association between exposure to fertility drugs and the risk of developing persistent trophoblastic tumour (PTT). METHODS: We conducted a systematic review of the English and non-English language literature using the National Library of Medicine's Medline to identify all observations of patients with hydatidiform mole (HM) after treatment with ovulation-inducers. RESULTS: Fifty-two cases were considered including 26 singleton molar pregnancies and 26 multiple molar pregnancies consisting of an HM and one or more co-existent fetus(es) (HM-and-CF). PTT occurred in 15% of patients with singleton HM and in 42% of patients with HM-and-CF, 15% of whom had a metastasic disease. Of those patients with HM-and-CF, 16 patients delivered at <24 weeks="" gestation,="" mostly="" because="" of="" vaginal="" haemorrhage.="" ten="" patients="" delivered="" at="" ≥24="" weeks="" of="" gestation,="" six="" of="" whom="" (25%)="" had="" a="" normal="" live="" child.="" these="" results="" are="" similar="" to="" spontaneously="" conceived="" pregnancies.="" conclusions:="" although="" women="" having="" an="" hm="" after="" therapy="" with="" ovulation-inducing="" drugs="" seem="" to="" have="" no="" added="" risk="" of="" ptt,="" multiple="" pregnancies="" are="" more="" likely="" to="" occur,="" and="" the="" overall="" risk="" may="" be="" increased.="">