Objective: The aim of this study is to evaluate the current data to understand the impact of intramural leiomyomata on pregnancy outcome in assisted reproduction. Patients and Methods: In this review, articles were found by means of computerized Medline and Cochrane Library search using the key words uterine myomata, leiomyomata, fibroids, implantation, pregnancy, infertility and in vitro fertilization. Limitations were English, human, 1990–2002. Inclusion criteria were pregnancy data on in vitro fertilization, intramural myomata with no cavitary distortion and control groups without myomas for each patient with a myoma. Results: There was a significant negative impact on implantation rate in the intramural myomata groups versus the control groups, 16.4 vs. 27.7% OR 0.62 (0.48–0.8). The delivery rate per transfer cycle was also significantly lower (myomata vs. control), 31.2 vs. 40.9% OR 0.69 (0.50–0.95). Conclusion: Our study supports the notion that patients with intramural fibroids have a lower implantation rate per cycle. The studies did not shed new light on the size of intramural myomata that could affect the outcome. In previous failed in vitro fertilization cycles, microsurgical removal of myomata must be considered.

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