Ramón Virasoro
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Previous Organizations / Institutes
The organizations / institutes from the scholar's other articles in the past ten years
Research Subjects
Ramón Virasoro has a total of 132 co-authors. Here are the top co-authors by number of shared publications:
Kurt McCammon
Department of Urology, Eastern Virginia Medical School, Norfolk, VA, USA
10 shared publicationsJeremy Tonkin
Department of Urology, Eastern Virginia Medical School, Norfolk, VA, USA
9 shared publicationsGerald H. Jordan
Department of Urology, Eastern Virginia Medical School, 1512 Bordeaux Place, Norfolk, VA, 23509, USA
8 shared publicationsJessica DeLong
Department of Urology, Eastern Virginia Medical School, Norfolk, VA, USA
7 shared publicationsEhab A. Eltahawy
University of Arkansas for Medical Sciences, Arkansas, AR, USA
5 shared publications- Jessica DeLong
CommonSpirit Urology, Durango, Colorado, USA
5 shared publications
Latest Publications
- Top Cited PapersOpen Access
- 12 September 2025
- Published by SAGE Publications in Journal of Endourology
- Vol. 39 (9) , 968-974
A Drug-Coated Balloon Treatment for Urethral Stricture Disease: Three-Year Results from the ROBUST III Study
Introduction: The goal of this study is to report the updated 3-year safety and efficacy outcomes of the intervention arm of the ROBUST III randomized controlled trial, comparing the Optilume® drug-coated balloon (DCB) with standard endoscopic management of recurrent male anterior urethral stricture. Methods: Eligible patients included adult men with recurrent anterior urethral stricture ≤3 cm in length and ≤12 Fr in diameter, International Prostate Symptom Score (IPSS) ≥11, and peak flow rate (Qmax) <15 mL/s. Patients were randomized to treatment with the Optilume DCB or standard-of-care endoscopic management. Primary endpoints evaluated over the 3-year follow-up period included freedom from reintervention and alterations in IPSS, Qmax, and postvoid residual (PVR). The primary safety endpoint was freedom from serious procedure- or device-related adverse events (AEs). Results: Descriptive statistics of the intervention cohort have been published previously. The treatment arm maintained a high percentage of patients free from repeat intervention (71%), nearly equal to the 2-year results and three times higher than that observed in the control group at the 1-year mark. Clinically significant subgroups, including those with history of repeat endoscopic dilations (≥5 prior dilations) and longer stricture lengths (≥2 cm), did not demonstrate any significant differences in observed metrics, including IPSS score, Qmax, or PVR. In the crossover cohort of patients who experienced treatment failure with standard endoscopic management and opted for DCB treatment, the Kaplan–Meier curve for freedom from reintervention closely resembles that of the original DCB cohort. Treatment-related AEs were rare and generally self-limited (hematuria, dysuria, and urinary tract infection). Conclusion: The Optilume DCB continues to achieve significant improvements in symptoms and reintervention rates through 3 years posttreatment and represents a viable endoscopic alternative with durable results and a low-risk safety profile for the management of recurrent anterior urethral strictures ≤3 cm in length.
- 12 September 2025
- Published by SAGE Publications in Journal of Endourology
- Vol. 39 (9) , 968-974
Top Cited PapersOpen AccessA Drug-Coated Balloon Treatment for Urethral Stricture Disease: Three-Year Results from the ROBUST III Study
Introduction: The goal of this study is to report the updated 3-year safety and efficacy outcomes of the intervention arm of the ROBUST III randomized controlled trial, comparing the Optilume® drug-coated balloon (DCB) with standard endoscopic management of recurrent male anterior urethral stricture. Methods: Eligible patients included adult men with recurrent anterior urethral stricture ≤3 cm in length and ≤12 Fr in diameter, International Prostate Symptom Score (IPSS) ≥11, and peak flow rate (Qmax) <15 mL/s. Patients were randomized to treatment with the Optilume DCB or standard-of-care endoscopic management. Primary endpoints evaluated over the 3-year follow-up period included freedom from reintervention and alterations in IPSS, Qmax, and postvoid residual (PVR). The primary safety endpoint was freedom from serious procedure- or device-related adverse events (AEs). Results: Descriptive statistics of the intervention cohort have been published previously. The treatment arm maintained a high percentage of patients free from repeat intervention (71%), nearly equal to the 2-year results and three times higher than that observed in the control group at the 1-year mark. Clinically significant subgroups, including those with history of repeat endoscopic dilations (≥5 prior dilations) and longer stricture lengths (≥2 cm), did not demonstrate any significant differences in observed metrics, including IPSS score, Qmax, or PVR. In the crossover cohort of patients who experienced treatment failure with standard endoscopic management and opted for DCB treatment, the Kaplan–Meier curve for freedom from reintervention closely resembles that of the original DCB cohort. Treatment-related AEs were rare and generally self-limited (hematuria, dysuria, and urinary tract infection). Conclusion: The Optilume DCB continues to achieve significant improvements in symptoms and reintervention rates through 3 years posttreatment and represents a viable endoscopic alternative with durable results and a low-risk safety profile for the management of recurrent anterior urethral strictures ≤3 cm in length.
- Open Access
- 30 August 2024
- Published by Wolters Kluwer Health in Journal of Urology
- Vol. 213 (1) , 90-98
Long-Term Outcomes of Recurrent Bulbar Urethral Stricture Treatment With the Optilume Drug-Coated Balloon: Five-Year Results From the ROBUST I Study
To report the 5-year study close-out results for the ROBUST I trial evaluating the safety and efficacy of the Optilume drug-coated balloon (DCB) for men with short, recurrent bulbar urethral strictures. Adult men with recurrent bulbar urethral strictures ≤ 2 cm long and lumen < 12 Fr were included in the study and treated with the Optilume DCB. Outcome measures included symptom questionnaires, maximum urinary flow rate (Qmax), post void residual (PVR), and freedom from repeat intervention. Functional success was defined as improvement in International Prostate Symptom Score (IPSS) of ≥ 50% without retreatment. Fifty-three men were enrolled and treated, and 31 subjects completed all follow-up. Functional success was achieved in 58% (25/43) patients at 5 years. Average IPSS improved from a mean of 25.2 at baseline to 7.2 at 5 years (P < .001). Freedom from repeat intervention was maintained through 5 years at 71.7% estimated by Kaplan-Meier. Qmax improved from 5.0 mL/s at baseline to 19.9 (P < .01) and average PVR was reduced from 141.4 mL to 59.5 mL (P < .01) at 5 years follow up. Erectile function remained unaffected. There were no serious treatment-related adverse events. In this challenging cohort of men with failed prior endoscopic treatment, the Optilume DCB shows sustained improvement in subjective and objective voiding parameters at 5 years. Optilume is a safe and effective treatment option for appropriately selected men with recurrent bulbar urethral stricture who wish to avoid urethroplasty. Results are in line with the ROBUST III randomized controlled trial that will continue follow-up through 5 years.
- 30 August 2024
- Published by Wolters Kluwer Health in Journal of Urology
- Vol. 213 (1) , 90-98
Open AccessLong-Term Outcomes of Recurrent Bulbar Urethral Stricture Treatment With the Optilume Drug-Coated Balloon: Five-Year Results From the ROBUST I Study
To report the 5-year study close-out results for the ROBUST I trial evaluating the safety and efficacy of the Optilume drug-coated balloon (DCB) for men with short, recurrent bulbar urethral strictures. Adult men with recurrent bulbar urethral strictures ≤ 2 cm long and lumen < 12 Fr were included in the study and treated with the Optilume DCB. Outcome measures included symptom questionnaires, maximum urinary flow rate (Qmax), post void residual (PVR), and freedom from repeat intervention. Functional success was defined as improvement in International Prostate Symptom Score (IPSS) of ≥ 50% without retreatment. Fifty-three men were enrolled and treated, and 31 subjects completed all follow-up. Functional success was achieved in 58% (25/43) patients at 5 years. Average IPSS improved from a mean of 25.2 at baseline to 7.2 at 5 years (P < .001). Freedom from repeat intervention was maintained through 5 years at 71.7% estimated by Kaplan-Meier. Qmax improved from 5.0 mL/s at baseline to 19.9 (P < .01) and average PVR was reduced from 141.4 mL to 59.5 mL (P < .01) at 5 years follow up. Erectile function remained unaffected. There were no serious treatment-related adverse events. In this challenging cohort of men with failed prior endoscopic treatment, the Optilume DCB shows sustained improvement in subjective and objective voiding parameters at 5 years. Optilume is a safe and effective treatment option for appropriately selected men with recurrent bulbar urethral stricture who wish to avoid urethroplasty. Results are in line with the ROBUST III randomized controlled trial that will continue follow-up through 5 years.
- Open Access
- 19 May 2023
- Published by Elsevier in Urology Video Journal
- Vol. 19, 100231
Transverse ventral preputial island flap ``Jordan Flap''
- 19 May 2023
- Published by Elsevier in Urology Video Journal
- Vol. 19, 100231
Open AccessTransverse ventral preputial island flap ``Jordan Flap''
- Open Access
- 1 May 2022
- Published by Taylor & Francis in Research and Reports in Urology
- Vol. ume 14, 177-183
A Drug-Coated Balloon Treatment for Urethral Stricture Disease: Three-Year Results from the ROBUST I Study
Introduction: Endoscopic management of male anterior urethral stricture disease is common; however, repeat treatment is associated with high recurrence rates. Here, we report the 3-year results of the ROBUST I trial, which evaluated the safety and efficacy of the Optilume® drug coated balloon (DCB) in men with recurrent urethral strictures. Methods: Adult men with recurrent bulbar urethral strictures ≤ 2 cm in length and 1– 4 prior endoscopic interventions were treated with the Optilume DCB. Functional success was defined as ≥ 50% reduction in International Prostate Symptom Score (IPSS) without need for retreatment. Other outcomes included quality of life, maximum flow rate, post-void residual urine volume, erectile function, and freedom from repeat intervention. Results: Of the 53 enrolled and treated men, 33 completed the 3-year visit, with 10 patients experiencing clinical failures at previous visits, giving a total of 43 subjects evaluable for the functional success endpoint. Functional success was achieved in 67% (29/43) and freedom from retreatment in 77% (33/43). Average IPSS improved from 25.2 at baseline to 5.5 at 3 years (p< 0.0001). Significant improvements were observed in quality of life, flow rate, and post-void residual urine volume. Erectile function was not affected by treatment. Device-related adverse events were mild or moderate in nature and resolved quickly after onset. There were no serious treatment-related adverse events. Conclusion: Symptomatic improvement after treatment with the Optilume DCB was maintained through 3 years in a population highly susceptible to recurrent urethral stricture disease. This minimally invasive therapy is safe with no negative impact on sexual function.
- 1 May 2022
- Published by Taylor & Francis in Research and Reports in Urology
- Vol. ume 14, 177-183
Open AccessA Drug-Coated Balloon Treatment for Urethral Stricture Disease: Three-Year Results from the ROBUST I Study
Introduction: Endoscopic management of male anterior urethral stricture disease is common; however, repeat treatment is associated with high recurrence rates. Here, we report the 3-year results of the ROBUST I trial, which evaluated the safety and efficacy of the Optilume® drug coated balloon (DCB) in men with recurrent urethral strictures. Methods: Adult men with recurrent bulbar urethral strictures ≤ 2 cm in length and 1– 4 prior endoscopic interventions were treated with the Optilume DCB. Functional success was defined as ≥ 50% reduction in International Prostate Symptom Score (IPSS) without need for retreatment. Other outcomes included quality of life, maximum flow rate, post-void residual urine volume, erectile function, and freedom from repeat intervention. Results: Of the 53 enrolled and treated men, 33 completed the 3-year visit, with 10 patients experiencing clinical failures at previous visits, giving a total of 43 subjects evaluable for the functional success endpoint. Functional success was achieved in 67% (29/43) and freedom from retreatment in 77% (33/43). Average IPSS improved from 25.2 at baseline to 5.5 at 3 years (p< 0.0001). Significant improvements were observed in quality of life, flow rate, and post-void residual urine volume. Erectile function was not affected by treatment. Device-related adverse events were mild or moderate in nature and resolved quickly after onset. There were no serious treatment-related adverse events. Conclusion: Symptomatic improvement after treatment with the Optilume DCB was maintained through 3 years in a population highly susceptible to recurrent urethral stricture disease. This minimally invasive therapy is safe with no negative impact on sexual function.
- Top Cited PapersOpen Access
- 1 April 2022
- Published by Wolters Kluwer Health in Journal of Urology
- Vol. 207 (4) , 866-875
One-Year Results for the ROBUST III Randomized Controlled Trial Evaluating the Optilume ® Drug-Coated Balloon for Anterior Urethral Strictures
Purpose:The Optilume® Drug Coated Balloon (DCB) is a urethral dilation balloon with a paclitaxel coating that combines mechanical dilation for immediate symptomatic relief with local drug delivery ...
- 1 April 2022
- Published by Wolters Kluwer Health in Journal of Urology
- Vol. 207 (4) , 866-875
Top Cited PapersOpen AccessOne-Year Results for the ROBUST III Randomized Controlled Trial Evaluating the Optilume ® Drug-Coated Balloon for Anterior Urethral Strictures
Purpose:The Optilume® Drug Coated Balloon (DCB) is a urethral dilation balloon with a paclitaxel coating that combines mechanical dilation for immediate symptomatic relief with local drug delivery ...
- 1 June 2021
- Published by Elsevier in European Urology
- Vol. 79, S554
ROBUST III: Interim results of a randomized trial of the optilume drug coated balloon for anterior urethral strictures
- 1 June 2021
- Published by Elsevier in European Urology
- Vol. 79, S554
ROBUST III: Interim results of a randomized trial of the optilume drug coated balloon for anterior urethral strictures
- 6 May 2020
- Published by Springer Nature in International Urology and Nephrology
- Vol. 52 (10) , 1893-1898
Surgical management and outcomes of adult acquired buried penis with and without lichen sclerosus: a comparative analysis
Purpose Adult acquired buried penis (AABP) can present with concomitant Lichen Sclerosus (LS), a chronic dermatosis that may affect surgical outcomes. Our aim was to evaluate outcomes of patients undergoing AABP repair with and without LS. Methods A retrospective cohort study was performed for AABP repair patients at a single institution from 1/1991 to 12/2017. Patient characteristics and surgical and peri-operative outcomes, including success, erectile function, and complications, were collected. Results Sixty-seven AABP patients with mean follow-up of 16.1 ± 20.4 months were identified. Overall surgical success was 91%. Overall surgical complication rate was 50.7% (23.9% Clavien-Dindo ≥ 3). Forty-two (62.7%) patients had concomitant LS. A higher proportion of patients with LS required a STSG (90% vs 60%, p = 0.005). There was no difference in surgical success (90.5% vs 92.0%, p = 0.999), overall complication rate (57.1% vs 40.0%, p = 0.212), Clavien-Dindo ≥ 3 complications (23.8% vs 24.0%, p = 0.999) or early complications (35.7% vs 32.0%, p = 0.797) between patients with and without LS, respectively. However, a higher proportion of patients with LS experienced late complications (33.3% vs 8.0%, p = 0.020), which were mainly related to wound healing. Satisfaction with erectile function was higher among patients with LS (59.5% vs 320%, p = 0.043). Conclusion AABP patients with LS behave somewhat differently than their non LS counterparts. They are more likely to require skin graft during surgical treatment. Though surgical success and complications are similar, they do experience a higher rate of late complications from impaired wound healing. Work on improving wound healing in this population should be considered.
- 6 May 2020
- Published by Springer Nature in International Urology and Nephrology
- Vol. 52 (10) , 1893-1898
Surgical management and outcomes of adult acquired buried penis with and without lichen sclerosus: a comparative analysis
Purpose Adult acquired buried penis (AABP) can present with concomitant Lichen Sclerosus (LS), a chronic dermatosis that may affect surgical outcomes. Our aim was to evaluate outcomes of patients undergoing AABP repair with and without LS. Methods A retrospective cohort study was performed for AABP repair patients at a single institution from 1/1991 to 12/2017. Patient characteristics and surgical and peri-operative outcomes, including success, erectile function, and complications, were collected. Results Sixty-seven AABP patients with mean follow-up of 16.1 ± 20.4 months were identified. Overall surgical success was 91%. Overall surgical complication rate was 50.7% (23.9% Clavien-Dindo ≥ 3). Forty-two (62.7%) patients had concomitant LS. A higher proportion of patients with LS required a STSG (90% vs 60%, p = 0.005). There was no difference in surgical success (90.5% vs 92.0%, p = 0.999), overall complication rate (57.1% vs 40.0%, p = 0.212), Clavien-Dindo ≥ 3 complications (23.8% vs 24.0%, p = 0.999) or early complications (35.7% vs 32.0%, p = 0.797) between patients with and without LS, respectively. However, a higher proportion of patients with LS experienced late complications (33.3% vs 8.0%, p = 0.020), which were mainly related to wound healing. Satisfaction with erectile function was higher among patients with LS (59.5% vs 320%, p = 0.043). Conclusion AABP patients with LS behave somewhat differently than their non LS counterparts. They are more likely to require skin graft during surgical treatment. Though surgical success and complications are similar, they do experience a higher rate of late complications from impaired wound healing. Work on improving wound healing in this population should be considered.
- 3 December 2019
- Published by Springer Nature in International Urology and Nephrology
- Vol. 52 (4) , 687-692
Predictors of surgical complications and evaluation of outcomes after surgical correction of adult-acquired buried penis
To determine predictors for surgical complications and assess patient satisfaction after surgical treatment of Adult-Acquired Buried Penis (AABP).
- 3 December 2019
- Published by Springer Nature in International Urology and Nephrology
- Vol. 52 (4) , 687-692
Predictors of surgical complications and evaluation of outcomes after surgical correction of adult-acquired buried penis
To determine predictors for surgical complications and assess patient satisfaction after surgical treatment of Adult-Acquired Buried Penis (AABP).
- 13 November 2019
- Published by Springer Nature
- p. 163-170
Vessel-Sparing Excision and Primary Anastomosis for Proximal Bulbar Urethral Strictures
- 13 November 2019
- Published by Springer Nature
- p. 163-170
Vessel-Sparing Excision and Primary Anastomosis for Proximal Bulbar Urethral Strictures
- 6 July 2019
- Published by Springer Nature in World Journal of Urology
- Vol. 38 (12) , 3013-3018
Non-transecting bulbar urethroplasty is favored over transecting techniques
To present current evidence supporting the vessel sparing technique to reconstruct bulbar urethral strictures via primary anastomosis.
- 6 July 2019
- Published by Springer Nature in World Journal of Urology
- Vol. 38 (12) , 3013-3018
Non-transecting bulbar urethroplasty is favored over transecting techniques
To present current evidence supporting the vessel sparing technique to reconstruct bulbar urethral strictures via primary anastomosis.