Publications by authors named "Solomon Hayon"
Objective: To validate the established normal testosterone to estradiol ratio and characterize the distribution of testosterone to estradiol ratios in a large cohort of fertile and subfertile men.
Materials And Methods: Retrospective review of adult men (≥18 years of age) presenting for fertility evaluation between 2002 and 2021 who underwent evaluation by a reproductive urologist, had 2 separate semen analyses and had hormonal testing within 6 months of their index semen analysis. Men were dichotomized into fertile and subfertile groups based on total motile sperm count on 2 semen analyses.
Purpose: Epididymal cyst lesions (ECLs) include both spermatoceles and epididymal cysts and are often incidentally found on physical exam or scrotal US (SUS). We aimed to determine the association of ECLs and semen parameters among men presenting for fertility evaluation.
Materials And Methods: We reviewed men at our institution who had at least 1 semen analysis and SUS available for review between 2002 and 2022.
Purpose: Our goal was to characterize the distribution of follicle stimulating hormone (FSH) in fertile and subfertile nonazoospermic men, and to determine the ability of various FSH thresholds to predict fertility status.
Materials And Methods: We performed a retrospective cohort study of 1389 nonazoospermic men who presented for fertility evaluation. Men with at least 2 semen analyses and 1 FSH level were included.
Low-intensity shockwave therapy (LiSWT) for erectile dysfunction (ED) continues to gain popularity in both clinical practice and the academic literature. The majority of trials and meta-analysis studies have shown LiSWT to be low risk with a trend toward positive improvements in International Index of Erectile Function (IIEF) scores. However, there is still debate over the clinical utility of LiSWT and there is no agreed upon optimal treatment protocol.
View Article and Find Full Text PDFObjective: To compare the prevalence of abnormal hormone parameters among men with and without oligospermia to determine the value of universal hormonal screening during initial fertility evaluation.
Materials And Methods: We retrospectively evaluated men who underwent semen analysis and hormonal evaluation (morning testosterone [T] and follicle-stimulating hormone [FSH]) between January 2002 and May 2021. Sperm concentration was dichotomized at 15 million/mL according to World Health Organization (WHO) criteria.
Objective: To describe our technique for performing ring flap metoidioplasty in transgender men.
Methods: In a ring flap metoidioplasty, the urethra is created from bilateral anteriorly based labia minora and vestibular flaps. This technique is combined with Ghent scrotoplasty, vaginectomy (distal mucosal excision and proximal mucosal fulguration followed by cavity closure) and perineal masculinization.
Objective: To demonstrate a technique for performing orchidopexy and split-thickness skin graft for patients with deficient scrotal skin after debridement for Fournier's gangrene. This is an alternative strategy to healing by secondary intention, flaps, or testicular thigh pouches.
Methods: Orchidopexy was performed after initial debridement using interrupted Vicryl sutures to bring the testicles and inferior penis together.
Objective: To investigate how surgeons approach ethically challenging scenarios that arise in penile prosthesis surgery and identify patient-related factors that impact their approach.
Methods: A survey was distributed to the Society for Urologic Prosthetic Surgeons membership consisting of 6 ethically challenging scenarios: an HIV+ patient, a patient with cognitive disability, a registered sex offender, a nonverbal patient, a litigious patient, and an uncontrolled diabetic patient whose insurance will lapse soon. Additional clinical information was provided to assess how the likelihood to offer surgery might change.
Purpose: Controversy exists around the use of epididymal sperm for in vitro fertilization and intracytoplasmic sperm injection for couples with obstructive azoospermia, and the ability to reliably predict fertility outcomes with surgically extracted epididymal sperm remains limited. To provide additional clinical context, we sought to compare in vitro fertilization/intracytoplasmic sperm injection outcomes of epididymal sperm from couples with obstructive azoospermia to outcomes of couples using normal, ejaculated sperm.
Materials And Methods: We performed a case-control analysis of 40 couples who underwent office based epididymal sperm retrieval for obstructive azoospermia followed by in vitro fertilization/intracytoplasmic sperm injection compared with a control group of 38 female, age matched couples with no evidence of female factor infertility who underwent in vitro fertilization/intracytoplasmic sperm injection with normal, ejaculated sperm.
Background: Although relative value units are used to measure physician productivity, research has demonstrated incongruencies between relative value units and actual surgeon work effort. We sought to determine whether this variation extends across surgical specialties.
Methods: A retrospective review of surgical cases was conducted using the 2017 American College of Surgeons National Surgical Quality Improvement Program database.
For men with obstructive azoospermia, several surgical sperm retrieval techniques can facilitate conception with assisted reproductive technology. The evolution of both percutaneous and open approaches to sperm retrieval has been affected by technological innovations, including the surgical microscope, in vitro fertilization, and intracytoplasmic sperm injection. Further modifications to these procedures are designed to minimize patient morbidity and increase the quality and quantity of sperm samples.
View Article and Find Full Text PDFObjective: To define the relationship between urology relative value units (RVUs) and measures of surgical complexity and physician workload. Secondary objectives include: (1) identifying procedures with outlying RVU values for their measures of surgical complexity and workload; and (2) calculating projected RVU values for these procedures.
Methods: We obtained surgical case data for 71 urology current procedural terminology (CPT) codes from the 2017 American College of Surgeons National Surgical Quality Improvement Program (NSQIP) database.
The testicular prosthesis can be an afterthought for providers when performing an orchiectomy for testicular cancer, torsion, atrophic testis, or trauma. However, data suggest that patients find the offer of a testicular prosthesis and counseling regarding placement to be extremely important from both a pragmatic and a psychosocial perspective. Only two-thirds of men undergoing orchiectomy are offered an implant at the time of orchiectomy and of those offered about one-third move forward with prosthesis placement.
View Article and Find Full Text PDFObjective: To quantify the relationship between the number of Twitter mentions and the number of academic citations a urologic publication receives.
Materials And Methods: Two hundred and thirteen papers from 7 prominent urologic journals were examined 37 months after publication. Articles were evaluated with 2 citation based "bibliometrics" (Scopus, Google Scholar) and Twitter mentions were tracked using the Altmetric Bookmarklet.
Background: Despite surgical advances, repair of rotator cuff tears is associated with 20-70% incidence of recurrent tearing. The tension required to repair the torn tendon influences surgical outcomes and may be dependent on the gap length from torn tendon that must be spanned by the repair. Detailed understanding of forces throughout the range of motion (ROM) may allow surgeons to make evidence-based recommendations for post-operative care.
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