meatotomy


Also found in: Medical, Wikipedia.

meatotomy

[‚mē·ə′täd·ə·mē]
(medicine)
Incision into and enlargement of a meatus.
References in periodicals archive ?
Endoscopic treatment of obstructive ureterovesical pathology using meatotomy in an oblique direction can preserve the submucosal tunnel and the muscular sheath and conserve the valvular function of the submucosal ureter or medial valve, thus preventing the occurrence of vesicoureteral reflux.
The objective of this study was to describe the surgical technique and the results of oblique ureteral meatotomy.
Over a 5-year period (April 2007 to March 2012), a prospective study was conducted to analyze the results of oblique ureteral meatotomy that was performed using endoscopic scissors.
No patients had previous treatment to meatotomy and none had a nephrostomy tube or ureteral stent.
In this patient with megaureter, the first meatotomy failed but no renal damage in renogram was observed, and a re-treatment with oblique meatotomy was performed; 6 months later the patient was asymptomatic and with the same grade of hydronephrosis.
We think that oblique meatotomy can preserve the submucosal tunnel and the muscular sheath better than other technique of meatotomy (although this point should be confirmed with a clinical trial comparing oblique meatotomy with other techniques of meatotomy).
In our study, oblique meatotomy performed with cold cutting using endoscopic scissors demonstrated a success rate of 94.
Additional comparative and prospective studies are needed using other endoscopic and surgical treatment methods to definitively establish oblique meatotomy as a first-line treatment in benign obstructive pathology of the ureterovesical junction.
Oblique ureteral meatotomy performed with cold cutting using endoscopic scissors has been demonstrated to be useful to treat obstructive pathology of the ureterovesical junction (obstructive megaureter, ureterocele, and stenosis of the ureteral meatus) with a high success rate and a low index of complications.
1: In figure 1a we can see the ureteroscopy and endoscopic scissors in right meatus performing the meatotomy at 5 o'clock.
Nine patients were excluded (2 had meatotomy, 1 postoperative retention and fixation of supra-pubic catheter, 1 detrusor sphincter dyssynergia, 3 re-do, 1 with urethral stricture and proximal diverticulum, 1 fistula).