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The Hypospadias Phenotype With A Distal Meatus In The Presence Of Distal Penile Penoscrotal Angle Fixation

Authors Wong YS, Pang KKY, Tam YH

Received 11 July 2019

Accepted for publication 16 September 2019

Published 25 September 2019 Volume 2019:11 Pages 255—260


Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 3

Editor who approved publication: Dr Jan Colli

Yuenshan Sammi Wong, Kristine Kit Yi Pang, Yuk Him Tam

Division of Paediatric Surgery and Paediatric Urology, Department of Surgery, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, NT, Hong Kong, People’s Republic of China

Correspondence: Yuk Him Tam
Division of Paediatric Surgery & Paediatric Urology, Department of Surgery, Prince of Wales Hospital, Shatin, NT, Hong Kong, People’s Republic of China
Tel +852-35052953
Fax +852-26377974

Objective: Hypospadias patients may present with the phenotype that features the migration of scrotum to distal penile shaft below a coronal/subcoronal meatus. Patients with this phenotype differ widely in the severity of the hypospadias and the complexity of the surgical repair. We aimed to investigate the operative findings and the outcomes of consecutive patients who presented with this phenotype.
Methods: We retrospectively reviewed the medical charts of 31 consecutive patients who underwent hypospadias repairs from January 2014 to May 2017, and the hypospadias was characterized by i) the external urethral meatus at coronal/subcoronal region, ii) scrotal skin encroaching distally resulting in fixation of penoscrotal angle at distal penile shaft, and iii) urethral plate below the glans on penile shaft invisible or barely visible.
Results: The median age at the time of surgery was 15.5 months (10–63). The division of corpus spongiosum was noted at distal penile shaft (n=2; 6.5%), mid-shaft (n=5; 16.1%) and proximal location (n=24; 77.4%). The median ventral curvature before degloving was 45 degrees (10–90). Twenty-eight and 3 patients underwent tubularized incised plate and 2-stage preputial flap repairs, respectively. Twenty-nine of 31 patients required cutback of the hypoplastic urethra. At the time of urethroplasty, 2 (6.5%), 7 (22.6%) and 22(70.9%) patients underwent distal, mid-shaft and proximal repairs, respectively. At a median follow-up of 30 months (14–50), 6 (19.4%) patients developed one or more complications (fistula=3; meatal stenosis=5).
Conclusion: Patients affected by this particular phenotype likely require non-distal hypospadias repair with possibly higher complication rate and should be treated by surgeons with expertise in complex hypospadias repair.

Keywords: hypospadias, division of corpus spongiosum, distal penile penoscrotal angle fixation

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