Double to avoid trouble? An experience of double Memokathtm 044TW stents insertion for multiple anterior urethral stricture in Hospital Universiti Sains Malaysia


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Abstract

For the past two decades urethral stenting became more popular for treatment of urethral stricture. However, urethral stents still not widely used in view of good outcome from urethroplasty surgery. The MemokathTM stent is the most popular in this field. It is manufactured from a biocompatible alloy of nickel and titanium. Most of the studies have been limited to single stent insertion, and no studies done for double stents insertion. An 81-year-old man with history of multiple anterior urethral strictures since 2013. He underwent internal urethrotomy in the same year but failed and was on urinary catheter since then. The MemokathTM 044TW was the option due to patient has multiple comorbidities. The micturating cystourethrogram (MCUG) and ascending urethrogram showed multiple anterior urethral strictures. He underwent direct visual internal urethrotomy and two MemokathTM stents inserted in the whole length of urethral. However, one year after procedure, he had recurrent lower urinary tract symptoms and ultimately developed acute urinary retention (AUR). Patient’s stents were removed endoscopically. During endoscopic removal, he had encrustation of both stents that causing obstructive symptoms. He is under our follow-up with no recurrent urinary retention or urosepsis with satisfactory uroflowmetry. Stent encrustation is known to be a common late complication of urethral stents. Stent encrustation should be suspected if patient comes with obstructive symptoms. Endoscopic is shown to be the best method to detect the cause of obstructed stent.

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About the authors

M. F. Mohd Isa

Universiti Sains Malaysia

Email: mashrafmdaud@gmail.com

Urology unit, Department of Surgery, School of Medical Sciences; Department of Surgery

Malaysia, Kubang Kerian, Kelantan

M. D. Mohamed Ashraf

Universiti Sains Malaysia

Author for correspondence.
Email: mashrafmdaud@gmail.com

Urology unit, Department of Surgery, School of Medical Sciences

Malaysia, Kubang Kerian, Kelantan

M. R. Yusof

Universiti Sains Malaysia; Hospital Pengajar Universiti PUTRA Malaysia

Email: mashrafmdaud@gmail.com

Urology unit, Department of Surgery, School of Medical Sciences

Malaysia, Kubang Kerian, Kelantan; Serdang, Selangor

N. G. Faiz

Universiti Sains Malaysia

Email: mashrafmdaud@gmail.com

Urology unit, Department of Surgery, School of Medical Sciences; Department of Surgery

Malaysia, Kubang Kerian, Kelantan

Siti Rahmah H. I. Merican

Hospital Universiti Sains Malaysia

Email: mashrafmdaud@gmail.com

Department of Surgery

Malaysia, Kubang Kerian, Kelantan

References

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Supplementary files

Supplementary Files
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1. JATS XML
2. Figure 1. Green arrow shown one of multifocal segments collectively measured 29.01 mm in length with narrowest part measured 2.3 mm in calibre

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3. Figure 2. Orange arrow shown another short segment narrowing at bulb membranous junction measuring 6.96 mm in length and 2.5 mm in caliber

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4. Figure 3. Blue arrow shown proximal and yellow arrow shown distal MemokathТМ 044TW. Lateral pelvic x-ray was shoot post procedure

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5. Figure 4. Red arrow shown total blockage of proximal MemokathТМ 044TW due to encrustation during flexible cystoscopy examination

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6. Figure 5. Uroflowmetry three months post removal of the MemokathТМ 044TW stents shown adequate volume with Qmax was 10.5 ml/s

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