Although the subinguinal approach to microsurgical varicocelectomy obviates the need to open the aponeurosis of the external oblique, it is associated with a greater number of internal spermatic veins and arteries compared with the inguinal approach. The primary branch point for the testicular artery occurs most commonly during its course through the inguinal canal. Internal spermatic arteries at the subinguinal level are more than 3 times as likely to be surrounded by a dense network of adherent veins than when they are identified at the inguinal level. Taken together, these data suggest that microscopic dissection is more difficult with a subinguinal incision.
Pharmacological or genetic decreases in iNOS resulted in amelioration of functional and fibrotic changes in the bladder after partial bladder outlet obstruction, suggesting that NO contributes to the pathophysiology of bladder outlet obstruction.
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