OBJECTIVE To evaluate cost per delivery using two different initial approaches to the treatment of postvasectomy infertility. DESIGN Model of expected costs and results in the United States in 1994. SETTING Men with postvasectomy infertility, evaluated and treated at centers with experience in vasectomy reversal or sperm retrieval and ICSI. PATIENT(S) Men with postvasectomy infertility, w...

OBJECTIVES Microdissection testicular sperm extraction (micro-TESE) is an optimal technique of sperm extraction for intracytoplasmic sperm injection. This study is to present our experience in micro-TESE and evaluate the relation of its sperm retrieval rate (SRR) with patients' characteristics, testicular functions, and histological parameters as well as previous sperm retrieval interventions. ...

BACKGROUND The availability of testis specific genes will be of help in choosing the most promising biomarkers for the detection of testicular sperm retrieval in patients with non-obstructive azoospermia (NOA). Testis specific chromodomain protein Y 1 (CDY1) is a histone acetyltransferase which concentrates in the round spermatid nucleus, where histone hyperacetylation occurs and causes the rep...

background: to evaluate predictive factors of successful microdissection-testicular sperm extraction (md-tese) in patients with presumed sertoli cell-only syndrome (scos). materials and methods: in this retrospective analysis, 874 men with non-obstructive azoospermia (noa), among whom 148 individuals with diagnosis of scos in prior biopsy, underwent md-tese at department of andrology, royan ins...

BACKGROUND The purpose of the study was to investigate whether micro-TESE can improve sperm retrieval rate (SRR) compared to conventional single TESE biopsy on the same testicle or to contralateral multiple TESE, by employing a novel stepwise micro-TESE approach in a population of poor prognosis patients with non-obstructive azoospermia (NOA). METHODS Sixty-four poor prognosis NOA men undergo...

As the field of assisted reproduction has advanced, many previously untreatable men are now biological fathers. Although finding sperm in men with obstructive azoospermia is not difficult, locating and retrieving spermatozoa in men with non-obstructive azoospermia remains a clinical challenge, largely because sperm production in these men can be patchy or focal in nature. In response to this ch...

Patients with non-obstructive azoospermia (NOA) were once considered to be infertile with few treatment options due to the absence of sperm in the ejaculate. In the last two decades, the advent of intracytoplasmic sperm injection (ICSI), and the application of various testicular sperm retrieval techniques, including fine needle aspiration (FNA), conventional testicular sperm extraction (TESE) a...