Incision of the Urethral Plate (Snodgrass Modification)

2009 ◽  
pp. 720-721
Author(s):  
Frank Hinman ◽  
Laurence S. Baskin
Keyword(s):  
Urethral Plate

514: A Histologic Study of Urethral Plate with Light and Transmission Electron Microscopy

2006 ◽  
Vol 175 (4S) ◽  
pp. 167-167
Author(s):  
Hyuk Sao Chang ◽  
Choal Hee Park ◽  
Chun I.I. Kim ◽  
Kwang Sae Kim
Keyword(s):  
Electron Microscopy ◽  
Transmission Electron Microscopy ◽  
Histologic Study ◽  
Urethral Plate ◽  
Transmission Electron

scholarly journals Role of the urethral plate characters in the success of tubularized incised plate urethroplasty

2014 ◽  
Vol 47 (02) ◽  
pp. 221-237 ◽  
Author(s):  
Hamdy Aboutaleb
Keyword(s):  
Fistula Formation ◽  
Success Rates ◽  
Flat Plates ◽  
Urethral Plate ◽  
Tubularized Incised Plate ◽  
Plate Shape ◽  
Fistula Rate ◽  
Universal Applicability ◽  
Complications Rate ◽  
Plate Width

ABSTRACT Background: Today, tubularized incised plate (TIP) urethroplasty is the most commonly performed operation for distal and mid-penile hypospadias. Reports from different centers worldwide confirm its nearly universal applicability and low complications rate. Aim: Evaluation of the urethral plate characters and its effect on the outcome of TIP urethroplasty. Materials and Methods: Between 2010 and 2013, 100 children with primary distal penile hypospadias underwent TIP urethroplasty. Urethral plates were categorized as flat, cleft, and deeply grooved. Postoperatively, patients were followed-up for evaluation of meatal stenosis, fistula formation, and glandular dehiscence at 1 st , 3 rd and 6 th months. Patients were followed-up for urethral calibration by urethral sound 8 Fr at 3 rd and 6 months follow-up. Data were statistically analysed using Epi info program to correlate between the width, plate shape, and complications. Results: Mean age at surgery was 4.3 years. Patients were followed-up for an average period of 6.4 months. Pre-operative location of the meatus was reported as coronal in 46, subcoronal in 50 and anterior penile in 4 cases. Urethral plate characters were flat in 26 cases, cleft in 52, and deeply grooved in 22. Urethral plate width was >8 mm in 74 cases and <8 mm in 26. Patients with urethral plate <8 mm had a statistically significant higher fistula rate (P = 0.004) and failed 8 Fr calibrations in 26.9% (P = 0.01) compared with the patients with urethral plate >8 mm. In addition, we also founds higher fistula rate and failed 8 Fr calibrations in flat urethral plate. Conclusions: An adequate urethral plate width (>8 mm) is essential for successful TIP repair. Lower success rates with flat plates may need buccal mucosal augmentation to improve the results.

scholarly journals Catheter-induced urethral injury and tubularized urethral plate urethroplasty in such iatrogenic hypospadias

2020 ◽  
Vol 26 (1) ◽  
Author(s):  
Ami Lal Bhat ◽  
M. Bhat ◽  
N. Khandelwal ◽  
A. Bhat ◽  
T. Singh
Keyword(s):  
Urethral Injury ◽  
Urethral Plate

scholarly journals The Role of Sonic Hedgehog-Gli2 Pathway in the Masculinization of External Genitalia

Endocrinology ◽  
2011 ◽  
Vol 152 (7) ◽  
pp. 2894-2903 ◽  
Author(s):  
Shinichi Miyagawa ◽  
Daisuke Matsumaru ◽  
Aki Murashima ◽  
Akiko Omori ◽  
Yoshihiko Satoh ◽  
...  
Keyword(s):  
Signaling Pathway ◽  
Sonic Hedgehog ◽  
Hedgehog Signaling ◽  
External Genitalia ◽  
Sexually Dimorphic ◽  
Hedgehog Signaling Pathway ◽  
Initial Development ◽  
Urethral Plate ◽  
Male External Genitalia

During embryogenesis, sexually dimorphic organogenesis is achieved by hormones produced in the gonad. The external genitalia develop from a single primordium, the genital tubercle, and their masculinization processes depend on the androgen signaling. In addition to such hormonal signaling, the involvement of nongonadal and locally produced masculinization factors has been unclear. To elucidate the mechanisms of the sexually dimorphic development of the external genitalia, series of conditional mutant mouse analyses were performed using several mutant alleles, particularly focusing on the role of hedgehog signaling pathway in this manuscript. We demonstrate that hedgehog pathway is indispensable for the establishment of male external genitalia characteristics. Sonic hedgehog is expressed in the urethral plate epithelium, and its signal is mediated through glioblastoma 2 (Gli2) in the mesenchyme. The expression level of the sexually dimorphic genes is decreased in the glioblastoma 2 mutant embryos, suggesting that hedgehog signal is likely to facilitate the masculinization processes by affecting the androgen responsiveness. In addition, a conditional mutation of Sonic hedgehog at the sexual differentiation stage leads to abnormal male external genitalia development. The current study identified hedgehog signaling pathway as a key factor not only for initial development but also for sexually dimorphic development of the external genitalia in coordination with androgen signaling.

The Outcomes of Perineal Urethrostomy With Preservation of the Dorsal Urethral Plate and Urethral Blood Supply

Urology ◽  
2011 ◽  
Vol 77 (5) ◽  
pp. 1223-1227 ◽  
Author(s):  
Jeremy B. Myers ◽  
Sima P. Porten ◽  
Jack W. McAninch
Keyword(s):  
Blood Supply ◽  
Urethral Plate

scholarly journals Tubularized proximally-incised plate in distal/midshaft hypospadias repair

2017 ◽  
Vol 39 (2) ◽  
Author(s):  
Antonio Marte ◽  
Lucia Pintozzi
Keyword(s):  
Perioperative Complications ◽  
Foley Catheter ◽  
Case Series ◽  
Functional Results ◽  
Inclusion Criteria ◽  
Urethral Plate ◽  
Age At Surgery ◽  
Long Term Follow Up

The aim of this study was to verify the validity, feasibility, and the functional results, by uroflowmetry, of Tubularized proximallyincised plate technique in selected case of distal/midshaft hypospadias. Out of 120 patients scheduled to undergo TIP (or Snodgrass) procedure, 23 were selected between January 2013 and January 2016 (19.1%). This case series comprised 16 patients with distal and 7 with midshaft hypospadias. Mean age at surgery was 2.9 years. The inclusion criteria were a deep and wide glandular groove and a proximal narrow urethral plate. The procedure was carried out as described by Snodgrass but the incision of the urethral plate, including the mucosal and submucosal tissue, was made only proximally, between the original meatus and the glandular groove in no case extending to the entire length of the plate. Postoperatively a foley catheter was left in place from 4 to 7 days. Uroflowmetry was performed when the patients age ranged from 2.5 to 5.7 years (mean age 3.11 years and mean follow-up 1.8 years, body surface 2). No patient presented fistulas nor perioperative complications. At uroflowmetry, eighteen patients presented values above the 25<sup>th</sup> percentile and 5 showed a borderline flow. All patients in this group remained stable without urinary symptoms. In selected cases, the tubularized proximally-incised plate yields satisfactory cosmetic and functional results for the treatment of midshaft proximal hypospadias. A long-term follow-up study is needed for further evaluation. Patient selection is crucial for the success of this technique.

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