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Urethroplasty with Pedicled Tunica Vaginalis for the Treatment of Long-segment Anterior Urethral Stricture Caused by Lichen Sclerosus of Glans Penis
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Ligamentous structures in human glans penis.

Shin-Hyo Lee1, Tae-Jun Ha1, Ki-Seok Koh1

  • 1Department of Anatomy, Research Institute of Medical Science, Konkuk University School of Medicine, Seoul, Korea.

Journal of Anatomy
|November 20, 2018
PubMed
Summary

The human glans penis has distinct fibrous bands, primarily collagen, originating from the corpus cavernosus (CC). Variations in these fibrous structures influence glans penis flexibility and rigidity.

Keywords:
corpus cavernosuscorpus spongiosumdistal urethrafibroskeletonglans penistunica albuginea

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Area of Science:

  • Anatomy
  • Histology
  • Urology

Background:

  • The corpus spongiosum constitutes a significant portion of the human glans penis.
  • Existing anatomical descriptions of glans penis fibrous structures lack clarity, complicating surgical procedures.

Purpose of the Study:

  • To clarify the anatomical characteristics of the fibrous skeleton of the human glans penis.
  • To investigate the composition and arrangement of connective tissues in the glans penis.

Main Methods:

  • Macroscopic dissection of 45 sagittally sectioned human cadaveric penises.
  • Histological analysis using Masson's trichrome and Verhoeff-Van-Gieson staining on glans penis tissues.
  • Observation of fibrous bands originating from the tunica albuginea of the corpus cavernosus (CC).

Main Results:

  • Distinct fibrous bands, continuous with the CC's tunica albuginea, were identified in 55.5% of specimens.
  • These bands, composed of longitudinal collagen and sparse elastic fibers, did not consistently reach the distal glans tip.
  • Variations in the presence, extent, and arrangement of these fibrous structures were observed.

Conclusions:

  • The human glans penis exhibits structural dimorphism in its fibrous skeleton.
  • Variations in dense connective tissue components contribute to the diverse flexibility, distensibility, and rigidity of the glans penis.
  • A clearer understanding of glans penis anatomy is crucial for surgical interventions.