Intralesional Injection Therapy and Atypical Peyronie's Disease: A Systematic Review

Introduction: Peyronie's disease (PD) is an inflammatory disorder of the tunica albuginea causing fibrotic changes including abnormal penile curvature, pain, and erectile dysfunction. Approximately 10% of PD patients will have atypical features including ventral plaques, hourglass deformities, unilateral indentations, severely shortened penile length, and multiplanar curvatures. Currently, the only intralesional treatment approved by the United States Food and Drug Administration is considered off-label for atypical PD. Furthermore, treatment of atypical PD, especially ventral plaques, is met with hesitation, in part due to potential urethral injury. Objectives: To systematically review the available literature for the safety and efficacy of intralesional injections for atypical PD. Methods: A thorough literature search of the PubMed database was performed on manuscripts published between 1982 and 2020. Keywords included atypical Peyronie's disease, ventral plaque, hourglass deformity, and injection. Results: 15 articles met the criteria for evaluation. Overall, 1,357 patients with PD were treated with intralesional therapy, of which 250 patients were considered to have an atypical presentation. 162 (648%) of the patients were treated with intralesional collagenase Clostridium histolyticum, 49 (19.6%) with verapamil, 29 (11.6%) with interferon alfa-2b, 5 (2.0%) with hyaluronic acid, and another 5 (2.0%) with onabotulinumtoxinA. There was only 1 reported severe adverse event (penile fracture), which was surgically repaired. There were no reports of urethral injury. Conclusion: Intralesional injection treatment may be a safe alternative option for atypical PD. There is a great need for future research to closely monitor the role of intralesional therapy in this cohort. Copyright (C) 2020, International Society for Sexual Medicine. Published by Elsevier Inc. All rights reserved.