الفهرس 
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Abstract
The aim of this work is to compare between in vitro fertilization with embryo transfer
(IVF-ET),and intracytoplasmic sperm injection (ICSI)in treating cases of unexplained
Infertility.
Also, to compare the outcome of IVF-ET between cases of unexplained infertility and
tube infertility, and ICSI between cases of unexplained infertility and male infertility.
We came to two main conclusions regarding the use of assisted reproductive
technology for unexplained infertility that :
First conclusion :
Both IVF-ET and ICSI were as successful in cases of unexplained infertility as in the
classic indications of these treatment modalities (IVF-ET for tubal factor infertility
and ICSI for male factor infertility).However, the success rates were higher in cases
of tubal infertility reflecting the possibility of gamete problems in the etiologist of
unexplained infertility.
The incidences of fertilization may be slightly higher with ICSI . However, the results
after conventional IVF-ET are comparable with ICSI. Although ICSI may avoid the
risk of complete fertilization failure, we cannot reach the conclusion that ICSI is the
answer for all cases of unexplained infertility requiring assisted reproductive
technology because ICSI is an invasive procedure and bypasses the natural
mechanisms against abnormal embryo development Moreover, it is more expensive
and requires more technical experience and time.