The Utility of Penile Bulb Contouring to Localise the Prostate Apex as Compared to Urethrography

Prostate Bed Delineation Guidelines for Postoperative Radiation Therapy: On Behalf Of The Francophone Group of Urological Radiation Therapy

“…Lock et al compared on 10 patients the relative accuracy of urethrogram or penile bulb delineation as surrogate markers for the prostate apex [19]. The authors showed that the penile bulb can be used to identify the prostate apex, and that the measurements between the penile bulb and the apex are consistent between patients and through the course of treatment.…”

“…The authors showed that the penile bulb can be used to identify the prostate apex, and that the measurements between the penile bulb and the apex are consistent between patients and through the course of treatment. Penile bulb can be reliably contoured between observers, ensuring a localization of the prostate apex comparable to urethrography [19].…”

Toxicity profile and Patient-Reported outcomes following salvage Stereotactic Ablative Radiation Therapy to the prostate Bed: The POPART multicentric prospective study

“…This could be attributed to the inclusion in the treatment volume of the penile bulb, a structure that has been associated with RT-induced erectile dysfunction [27] , [28] . This soft tissue structure lying immediately below the urogenital diaphragm of the pelvic floor and easily identified on the CT imaging defines the inferior limit of the prostate bed - CTV delineation according to the aforementioned guideline [17] , and has been demonstrated to be a surrogate landmark for the prostate apex [29] , [30] comparable to urethrography [31] . Despite the relatively short follow-up period, the high freedom from biochemical failure (FFBF) rate appears to support the premise that salvage postoperative SBRT can be implemented without compromising treatment efficacy while potentially increasing patients compliance.…”