title: Penile intracavernosal pillars: lessons from anatomy and potential implications for penile prosthesis placement.
abstract: The objective of this study was to anatomically describe the relationship of penile intracavernosal pillars to penile surgery, specifically corporal dilation during penile prosthesis placement. Corpora cavernosa from four embalmed male cadavers were dissected and subjected to probe dilation. Corpora were cross-sectioned and examined for the gross presence and location of pillars and dilated spaces. Infrapubic penile prosthesis insertion was performed on one fresh-frozen cadaveric male pelvis, followed by cross-sectioning. A single patient had intracavernosal pillars examined intraoperatively during Peyronie's plaque excision and penile prosthesis insertion. Intracavernosal pillars were identified in all cadavers and one surgical patient, passing obliquely from the dorsolateral tunica albuginea across the sinusoidal space to the ventral intercorporal septum. This delineated each corpus into two potential compartments for dilation: dorsomedial and ventrolateral. Dorsal dilation seated instruments and prosthetics satisfactorily in the dorsal mid glans and provided additional tissue coverage over weak ventral areas of the tunica albuginea, while ventrolateral dilation appeared to result in ventral seating and susceptibility to perforation. Intracavernosal pillars are an important anatomic consideration during penile prosthesis placement. Dorsal dilation appears to result in improved distal seating of cylinder tips, which may be protective against tip malposition, perforation or subsequent erosion.
authors.affiliation: Department of Urology, Columbia University Medical Center, New York, NY, USA.
authors.forename: M J
authors.initials: MJ
authors.lastname: Pagano
authors.affiliation: Department of Urology, Columbia University Medical Center, New York, NY, USA.
authors.forename: A C
authors.initials: AC
authors.lastname: Weinberg
authors.affiliation: Department of Urology, Medical College of Wisconsin, Milwaukee, WI, USA.
authors.forename: C M
authors.initials: CM
authors.lastname: Deibert
authors.affiliation: Washington Heights Urology, New York, NY, USA.
authors.forename: K
authors.initials: K
authors.lastname: Hernandez
authors.affiliation: Department of Urology, New York University Langone Medical Center, New York, NY, USA.
authors.forename: J
authors.initials: J
authors.lastname: Alukal
authors.affiliation: Department of Urology, New York University Langone Medical Center, New York, NY, USA.
authors.forename: L
authors.initials: L
authors.lastname: Zhao
authors.affiliation: Institute for Urologic Excellence, Indio, CA, USA.
authors.forename: S K
authors.initials: SK
authors.lastname: Wilson
authors.affiliation: Penile Curvature Center, São Paulo, Brazil.
authors.forename: P H
authors.initials: PH
authors.lastname: Egydio
authors.affiliation: Department of Urology, Columbia University Medical Center, New York, NY, USA.|Washington Heights Urology, New York, NY, USA.
authors.forename: R J
authors.initials: RJ
authors.lastname: Valenzuela
mesh_terms: D019412:Anatomy, Cross-Sectional; D002102:Cadaver; D006801:Humans; D008297:Male; D019935:Penile Implantation / Q000379:methods*; D010411:Penile Induration / Q000601:surgery; D015917:Penile Prosthesis; D010413:Penis / Q000033:anatomy & histology* / Q000000981:diagnostic imaging / Q000601:surgery*; D014463:Ultrasonography