الفهرس 
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Abstract
This study is made on 100 non obstrstructive azoospermic patients to compare between the transverse and the longitudinal incisions in bilateral TESE .
The patients were selected according to clinical examination, semen analysis and FSH level suggestive of NOA.
These patients were subjected to the followings:
1- History Taking.
2- Clinical Examination.
3- Semen Analysis.
4- s-FSH determination.
5- Surgical procedure.
6-Clinical follow up for any post operative complications for 6 months.
Bilateral Microdissection Testicular Sperm Extraction (Microdissection TESE) one side by silber technique and the other by schelgel technique was done.
The results showed the following:
The patients were classified according to histopathology into:
• 5 patients (5%) with hypospermatogenesis,
• 29 patients (29 %) with maturation arrest at spermatocyte level,
• 18 patients (18%) with mixed pathology,
• 48 patients (48 %) with Sertoli cell only 48 syndrome
The mean age of the male was 35.75 years (21-62).
In our study which was done on 100 patients of non obstructive azoospermia, sperm retrieval was about (37.7%) in first TESE patients while it was (12.7%) in patients with previous failure.
The results showed no statistically significance between both tegniques(Siber, Schelgel) P value =0.510. However in only one case ,showed sperm retrieval from the testes done by schelgel technique. This case had Spermatogenic Arrest at Spermtocyte Level at histopathology..
Conclusion:
• We have found that the technique of micro TESE not have effect on sperm retrieval .
• Our study also concolouded that frequency of TESE can affect on sperm retrieval rate as the rate is higher in patients of first TESE than who with previous failure.
• None of the clinical parameters e.g. FSH, testicular size, age and duration of infertility preclude the trial of TESE in every NOA patient.