Experimental investigation of early assessment of corpora cavernosa fibrosis with two-dimensional shear wave elastography / 亚洲男科学杂志(英文版)

This study explored the usefulness of two-dimensional shear wave elastography (2D-SWE) in the early assessment of corpora cavernosa fibrosis (CCF). New Zealand male rabbits were randomly assigned to an experimental group or a control group. Recombinant human transforming growth factor beta 1 (TGF-β1) was injected into the dorsal penis tissue of rabbits in the experimental group. Conventional ultrasound and 2D-SWE examinations were performed before and 20 days after injection. Penile histological analysis was performed by hematoxylin-eosin staining, sirius red staining, and immunohistochemistry. Measurement of 2D-SWE examination results was performed using shear wave elastography quantitative measurement (SWQ). Histological analysis outcomes were the proportion of smooth muscle cells (SMCs), collagen fibers (CFs), collagen type I (Col I), and collagen type III (Col III), as well as the SMCs/CFs ratio, measured by sirius red staining. Other histological analysis outcomes were the positive area proportion (PAP) of TGF-β1 (PAPT), fibronectin (PAPF), and Col III (PAPC), measured by immunohistochemistry. After recombinant human TGF-β1 injection, SWQ was higher in the experimental group than that in the control group (P < 0.001); however, there were no differences in conventional ultrasound results. There were significant differences in histological outcomes between the two groups (all P < 0.05). These results indicated that 2D-SWE was superior for identifying early histological changes in CCF.

Reconstrucción del pene oculto del adulto: experiencia en un mismo centro / Adult Buried Penis Reconstruction: a single center experience

Introducción. El pene oculto del adulto se presenta como una patología con prevalencia en ascenso, por el incremento de pacientes obesos y diabéticos. Representa un desafío para la reconstrucción en cirugía plástica y urología. El objetivo de este trabajo es describir la experiencia del Hospital Alemán de Buenos Aires en la resolución quirúrgica de esta patología. Métodos y resultados. Durante el año 2019 se realizaron dos cirugías reconstructivas de pacientes con pene oculto del adulto a cargo del Servicio de Cirugía Plástica del Hospital, en conjunto con el Servicio de Urología. El procedimiento fue segmentado en tres partes: Liberación del cuerpo peneano del panículo adiposo, dermolipectomía suprapúbica, y finalmente injerto del pene con piel de espesor total. El tiempo promedio de cirugía fue de 4 horas, sin complicaciones intraoperatorias. En ambos casos hubo prendimiento parcial del injerto, con la necesidad de tratamiento tópico con crema de colagenasa para estimular la cicatrización por segunda intención. La satisfacción funcional de los pacientes fue del 100% en ambos casos; la satisfacción estética fue incompleta. La recuperación de la erección y la función sexual fue completa para ambos. Conclusiones. La reconstrucción del pene oculto del adulto implica el trabajo multidisciplinario sobre una patología con resolución quirúrgica, con buenos resultados funcionales, aunque no exento de complicaciones estéticas.

Introduction. Adult buried penis represents a disease with increasing prevalence, after the ascending incidence of obese and diabetic patients. It represents an urologic and plastic surgery challenge. The aim of this paper is to describe the experience of German Hospital in Buenos Aires on the surgical resolution of this pathological entity. Methods and results. During year 2019 two adult buried penis surgeries were held by the Plastic Surgery service, with participation of the Urology service. The procedure was divided in three steps: Release of the penis from the adipose panicle; suprapubic dermolipectomy; and finally full-thickness skin graft on the penis body. The average surgery time was four hours. In both cases there was partial intake of the skin graft, which needed collagenase topical treatment to stimulate second intention healing. Functional satisfaction was 100% in both cases; aesthetical satisfaction was incomplete. Recovery of penile erection and sexual function was complete in both cases. Conclusions. Adult penis reconstruction implies an interdisciplinary work on a surgically correctable anomaly, with good functional results, although not exempt of aesthetical complications

Postoperative aesthetic and healing features of postectomy using three different surgical techniques: a randomized, prospective, and interdisciplinary analysis / Aspectos estético e cicatricial pós-operatórios da postectomia por três diferentes técnicas cirúrgicas: análise randomizada, prospectiva e interdisciplinar

ABSTRACT Objective: to compare the postoperative esthetic and healing aspects of postectomy performed by different surgical techniques, based on the evaluation of different specialty expert professionals. Methods: prospective and randomized clinical trial enrolling 149 preschool children with a medical indication for circumcision, divided into three groups: postectomy with the hemostatic device Plastibell® (PB group), conventional technique (CV group) and conventional with subcuticular stitches (SC group). Pictures were taken from patients at pre-defined angles on the 30th and 60th postoperative days. Photos were evaluated by three specialists (dermatologist, pediatrician and plastic surgeon), who assigned scores from 1 to 5 regarding the esthetic and healing features at each moment. Grades 4 or 5 from all specialists characterized "best result". Data were analysed to compare the used surgical techniques, the judgments from specialties and postoperative complications. Results: most of the patients obtained the "best result" regarding healing (70%) and esthetics (56%). The final overall result showed the PB group as the best for healing (p=0.028) and the SC group as the best for esthetics (p=0.002). For the dermatologist, on the 60th postoperative day, the CV group presented the worst aesthetic result, whereas for the pediatrician and the plastic surgeon, the PB group presented the best healing result and the SC group had the best esthetic result. There was no difference between the groups regarding the presence of complications. Conclusion: the most common surgical techniques used to perform postectomy in children were differently assessed regarding healing and esthetic features by distinct medical professionals. The analysis of these two parameters among experts from related areas diverged among them and over time.

RESUMO Objetivo: analisar os aspectos estético e cicatricial pós-operatórios (PO) de pacientes submetidos a postectomia por diferentes técnicas cirúrgicas a partir da avaliação de profissionais experientes de áreas afins. Método: ensaio clínico prospectivo e randomizado, incluindo 149 meninos em idade pré-escolar com indicação médica de postectomia, divididos em três grupos: postectomia com dispositivo hemostático Plastibell® (grupo PB), técnica convencional (grupo CV) e convencional com pontos subcuticulares (grupo SC). Os pacientes foram fotografados em ângulos predefinidos no 30º e 60º dias de PO e as fotos avaliadas por três especialistas (dermatologista, pediatra e cirurgião plástico) que atribuíram notas entre 1 e 5, quanto aos aspectos estético e cicatricial em cada momento. Notas 4 ou 5 de todos os especialistas caracterizaram o "melhor resultado". Os dados foram submetidos à análise estatística para comparar as técnicas cirúrgicas, as avaliações dos especialistas e as complicações pós-operatórias. Resultados: a maioria dos pacientes obteve "melhor resultado" cicatricial (70%) e estético (56%). O resultado geral final apontou o grupo PB como superior quanto à cicatrização (p=0,028) e o grupo SC quanto ao aspecto estético (p=0,002). Para o dermatologista, na segunda avaliação, o grupo CV apresentou o pior resultado estético, enquanto para o pediatra e o cirurgião plástico, o grupo PB apresentou o melhor resultado cicatricial e o grupo SC o melhor resultado estético. Não houve diferença entre os grupos quanto à presença de complicações. Conclusão: as técnicas cirúrgicas mais empregadas para realizar postectomia em crianças foram avaliadas quanto aos resultados cicatricial e estético de distintas maneiras. A análise desses dois parâmetros entre especialistas de áreas afins divergiu entre eles e ao longo do tempo.

Morphological and molecular analysis of apoptosis in the corpus cavernosum of rats submitted to a chronic alcoholism model

Abstract Purpose To evaluate the effect of chronic alcoholism on morphometry and apoptosis mechanism and correlate with miRNA-21 expression in the corpus cavernosum of rats. Methods Twenty-four rats were divided into two experimental groups: Control (C) and Alcoholic group (A). After two weeks of an adaptive phase, rats from group A received only ethanol solution (20%) during 7 weeks. The morphometric and caspase-3 immunohistochemistry analysis were performed in the corpus cavernosum. The miRNA-21 expression was analyzed in blood and cavernous tissue. Results Chronic ethanol consumption decreased cavernosal smooth muscle area of alcoholic rats. The protein expression of caspase 3 in the corpus cavernosum was higher in A compared to the C group. There was no difference in the expression of miRNA-21 in serum and cavernous tissue between the groups. Conclusion Chronic ethanol consumption reduced smooth muscle area and increased caspase 3 in the corpus cavernosum of rats, without altered serum and cavernosal miR-21 gene expression.

Perfil clínico de pacientes com Síndrome de Fournier em um hospital terciário / Clinical profile of patients with Fournier's Syndrome in a tertiary hospital

INTRODUÇÃO: A Síndrome de Fournier consiste em uma fasciite necrosante que afeta tecido subcutâneo e pele do períneo e genitais externos. Caracterizada como uma urgência cirúrgica, seu tratamento é baseado em três pilares: debridamento de tecidos necróticos e infectados; controle sistêmico e antibioticoterapia; e reparação dos tecidos afetados. OBJETIVO: Identificar o perfil clínico de pacientes diagnosticados com Síndrome de Fournier em um hospital de urgências. MÉTODOS: Trata-se de um estudo descritivo, retrospectivo e de abordagem quantitativa. A amostra consistiu de pacientes diagnosticados com Síndrome de Fournier acompanhados pela comissão de curativos do hospital no período de agosto de 2016 a agosto de 2017, que receberam alta ou foram a óbito. RESULTADOS: A amostra do estudo foi composta por 14 pacientes, sendo em sua totalidade pacientes do sexo masculino, entre 21 e 82 anos e idade média de 55 anos. Em 50% dos casos, foi necessário internação em Unidade de Terapia Intensiva (UTI). Quanto ao desfecho, 78,6% (11) receberam alta hospitalar e 21,4% (3) evoluíram para óbito. CONCLUSÃO: A assistência a pacientes com Síndrome de Fournier ocorre de forma despadronizada, o que ocasiona altas taxas de mortalidade. A elaboração de protocolos específicos é necessária.

INTRODUCTION: Fournier's Syndrome consists of a necrotizing fasciitis that affects subcutaneous tissue and skin of the perineum and external genitalia. Characterized as a urological urgency, its treatment is based on three pillars: debridement of necrotic and infected tissues; systemic control and antibiotic therapy; and repair of the affected tissues. OBJECTIVE: To identify the clinical profile of patients diagnosed with Fournier's Syndrome in an emergency hospital. METHODS: This is a descriptive, retrospective and quantitative study. The sample consisted of patients diagnosed with Fournier's Syndrome and attended by the hospital curative committee from August 2016 to August 2017, who were discharged or died. RESULTS: The study sample consisted of 14 medical records, all of them were male, aged between 21 and 82 years and mean age of 55 years. In 50% of the cases admittance to the Intensive Care Unit (ICU) was necessary. Regarding the outcome, 78.6% (11) were discharged from hospital and 21.4% (3) died. CONCLUSION: Assistance to patients with Fournier Syndrome is poorly standardized, resulting in high mortality rates. Development of specific protocols is necessary.

Treatment options and outcomes of penile constriction devices

ABSTRACT Purpose: To study the effect of penile constriction devices used on a large series of patients who presented at our emergency facility. We explored treatment options to prevent a wide range of vascular and mechanical injuries occurring due to penile entrapment. Materials and Methods: Between January 2001 and March 2016, 26 patients with penile entrapment were admitted to our facility and prospectively evaluated. Results: The time that elapsed from penile constrictor application to hospital admission varied from 10 hours to 6 weeks (mean: 22.8 hours). Non-metallic devices were used by 18 patients (66.6%) while the other nine (33.4%) had used metallic objects. Acute urinary retention was present in six (23%) patients, of whom four (66.6%) underwent percutaneous surgical cystotomy and two (33.4%) underwent simple bladder catheterization. The main reason for penile constrictor placement was erectile dysfunction, accounting for 15 (55.5%) cases. Autoerotic intention, psychiatric disorders, and sexual violence were responsible in five (18.5%), five (18.5%), and two (7.4%) cases, respectively. The mean hospital stay was 18 hours (range, 6 hours to 3 weeks). Conclusion: Penile strangulation treatment must be immediate through the extraction of the foreign body, avoiding vascular impairments that can lead to serious complications. Most patients present with low-grade injuries and use penile constrictors due to erectile dysfunction. Removal of constrictor device can be challenging. The use of specific tools for achieving penile release from constrictors is a fast, safe and effective method. Patients with urinary retention may require urinary diversion.

Effects of tadalafil to prevent injury on corpus cavernosum after vascular or nervous peri-prostatic bundle injury. Experimental model in rats

Abstract Purpose: To evaluate the effects of tadalafil (TD) in preventing histological alterations of the corpus cavernosum caused by isolated lesions of cavernous nerve (ILCN) and artery (ILCA) in rats. Methods: Fifty male Wistar rats were randomly assigned in five groups: G1: control; G2: bilateral ILCN; G3: bilateral ILCA; G4: ILCN+TD; G5: ILCA+TD. The cavernous bodies were submitted to histomorphometry, immunohistochemistry and biochemical analysis. Results: Nerve density was significantly higher in G2 and G4 compared to control (22.62±2.84 and 19.53±3.47 vs. 15.72±1.82; respectively, p<0.05). Smooth muscle density was significantly lower in G2 and G3 in comparison to G1 (12.87±1.90 and 18.93±1.51 vs. 21.78±1.81, respectively; p<0.05). A significant decrease in the sinusoidal lumen area was observed in G2 compared to controls (5.01±1.62 vs. 9.88±3.66, respectively; p<0.05) and the blood vessel density was increased in G2 and G3 (29.32±4.13 e 20.80±2.47 vs. 10.13±2.71, p<0.05). Collagen density was higher in G3 compared to G1 (93.76±15.81 vs. 64.59±19.25; p<0.05). Conclusions: Histomorphometric alterations caused by ILCN were more intense than those produced by vascular injury, but the collagen analyses showed more fibrosis in animals with ILCA. TD was effective in preventing the majority of the alterations induced by the periprostatic bundle injury.

Objective measurements of the penile angulation are significantly different than self-estimated magnitude among patients with penile curvature

ABSTRACT Introduction: The study was aimed to assess the presence of actual differences between the objective and the perceived magnitude of a curvature between patients affected by Peyronie's disease (PD) and congenital penile curvature (CPC). Materials and Methods: Wee analysed a cohort of 88 consecutive patients seeking medi- cal help for either CPC or PD. All patients were invited to provide a self-made drawing of their penis in erection in order to obtain self-provided description of the deformity. An objective measurement of the deformity was also performed drawing two intersecting lines through the center of the distal and proximal straight section of the penile shaft. Results: Our findings showed significant differences between patient self-estimation and the objective measurements of the penile angulation performed by trained experts, with only 32% of patients correctly assessing their own curvature. Overall, patients tended to overestimate (56%) their degree of curvature, but the results are different in patients with PD than those with CPC. In the 60 men (68%) who did not accurately assess their curvature, PD patients generally overestimated their curvature versus CPC patients (67% vs 16%). On the contrary CPC patients underestimated their curvature compared to PD (42% vs. 4%). Conclusion: In order to improve patients' satisfaction rates, the surgeon needs to take into consideration the patient's perception of the deformity when planning the type of surgical correction.

El priapismo en la Leucemia Mieloide Crónica Hallazgos radiológicos en casos de Leucemia Mieloide Crónica que se presentaron con priapismo / 7 PRIAPISM IN CHRONIC MYELOID LEUKEMIA : IMAGING FINDINGS IN CASES OF CHRONIC MYELOID LEUKEMIA WHO PRESENTED WITH PRIAPISM

El priapismo es una emergencia urológica que debe ser diagnosticada y tratada apropiadamente. Específicamente en casos conocidos de leucemia el pene turgente doloroso debe hacer surgir la sospecha de priapismo de primera movida y el Doppler peneano debe ser la mera línea de modalidad de imágenes. Esta información debe ser transmitida al paciente y al departamento clínico emergentológico

Priapism is an urological emergency and must be diagnosed and treated appropriately. Specifically in known cases of leukemia painful turgid penis should raise suspicion of priapism in first hand and penile Doppler should be the first line of imaging modality. This information should be forwarded to patient and emergency department clinician

Kissing nevus of the penis: a case report and dermatoscopic findings

Abstract Divided nevus, also known as kissing nevus, is a rare variant of congenital melanocytic nevi in which there are two adjacent nevi in areas of the body that undergo embryonic cleavage. The original description of this type of lesion was on the eyelid. The location on the penis is even rarer, with only 17 case reports in the literature so far, and only one of them described the dermoscopic findings. We report the case of a patient with divided nevus of the penis and its clinical, dermoscopic and histopathological features.

Calcifilaxis: revisión de tema acerca de la calcifilaxis del pene / Calciphylaxis: review of the topic about penile calcifilaxis

Resumen:La calcifilaxis es una alteración vascular considerada como un síndrome multifactorial, que afecta la túnica media de las arterias más pequeñas causando isquemia del pene y esto a su vez una gangrena de rápida evolución.Su etiopatogenia aun no es muy clara y la bibliografía acerca de esta condición es escasa, a pesar de que su incidencia ha ido en aumento en los últimos años. La calcifilaxis del pene es una condición casi exclusiva para pacientes con insuficiencia renal crónica que reciben diálisis y frecuentemente es subdiagnosticada por los profesionales de la salud. Sus manifestaciones clínicas son altamente agresivas y de rápida evolución, además asocia una alta morbi-mortalidad por lo que debe diagnosticarse con la mayor brevedad posible. El manejo de los pacientes con calcifilaxis es multidisciplinario, en el intervienen tanto el urólogo como el nefrólogo y su tratamiento debe personalizarse según las condiciones de cada paciente, iniciando como primera medida con un manejoconservador y posteriormente quirúrgico si no se logra la respuesta deseada.

Abstract:Calciphylaxis is a vascular disorder, considered a multifactorial syndrome that affects the media of small caliber vessels, causing penile ischemia and in turn, rapidly evolving gangrene. Despite the raising incidence rates in recent years, literary information is limited, and its pathogenesis remains unclear. This condition is almost entirely attributed to chronic kidney disease patients receiving dialysis treatment, and is often clinically underdiagnosed by health care professionals. Clinically, calciphylaxis is considered to be rapidly evolving and highly aggressive, associated with high morbility and mortality rates, making prompt diagnosis imperative.

Erythroplasia of Queyrat treated with topical 5-fluorouracil

Abstract We report a 33-year-old male patient diagnosed with erythroplasia of Queyrat. The patient had an erythematous and eroded lesion affecting more than 50% of the glans associated with bleeding and local pain. Despite previous indication of penectomy, he was successfully treated with topical 5-fluorouracil.

Papulonodular secondary syphilis: a rare clinic presentation confirmed by serologic and histologic exams

Abstract: Syphilis is a sexually transmitted disease caused by Treponema pallidum and divided into three stages according to the duration of the disease: primary, secondary and tertiary. Secondary syphilis has diverse clinical presentations, such as papular-nodular lesions. This presentation is rare, with 15 cases reported in the literature over the past 20 years. We report a case of secondary syphilis with papular-nodular lesions in a healthy 63-year-old patient, who has presented treponema in immunohistochemical examination of the skin lesions.

The possible protective effects of dipyridamole on ischemic reperfusion injury of priapism

ABSTRACT Purpose To investigate the protective effects against ischemia reperfusion injury of dipyridamole in a model of induced priapism in rats. Materials and Methods Twenty-four male Sprague-Dawley rats were divided into four groups, control, P/R, P/R+DMSO and P/R+D. 3ml blood specimens were collected from vena cava inferior in order to determine serum MDA, IMA, TAS, TOS and OSI values, and penile tissue was taken for histopathological examination in control group. Priapism was induced in P/R group. After 1h, priapism was concluded and 30 min reperfusion was performed. In P/R+DMSO group 1ml/kg DMSO was administered intraperitoneally 30 min before reperfusion, while in P/R+D group 10mg/kg dipyridamole was administered intraperitoneally 30 min before reperfusion. Blood and penis specimens were collected after the end of 30 min reperfusion period. Sinusoidal area (µm2), tears in tunica albuginea and injury parameters in sinusoidal endothelium of penis were investigated. Results Histopathological examination revealed no significant changes in term of sinusoidal area. A decrease in tears was observed in P/R+D group compared to P/R group (p<0.05). Endothelial injury decreased in P/R+D group compared to P/R group (p>0.05). There were no significant differences in MDA and IMA values between groups. A significant increase in TOS and OSI values was observed in P/R+D group compared to P/R group. A significant decrease in TAS levels was observed in P/R+D group compared to the P/R group. Conclusions The administration of dipyridamole before reperfusion in ischemic priapism model has a potential protective effect against histopathological injury of the penis.

Morphometric study of the corpus cavernosum after anabolic androgenic steroid administration in pubertal and adult rats

PURPOSE: To evaluate the penile morphological modifications of pubertal and adult rats chronically treated with supra-physiological doses of anabolic androgenic steroids. METHODS: Forty-eight male Wistar rats were distributed into four groups: two control groups, 105- and 65-day-old (C105 and C65, respectively) injected with peanut oil (vehicle); and two treated groups, 105- and 65-day-old (T105 and T65, respectively) injected with nandrolone decanoate at a dose of 10 mg Kg-1 of body weight. The rats were injected once a week for eight weeks. The rats were then killed and their penises were processed for histomorphometric analyses. The mean of each parameter was statistically compared. RESULTS: A corpus cavernosum reduction of 12.5% and 10.9% was observed in the T105 and T65 groups, respectively, when compared with their respective control groups. The cavernosum smooth muscle surface density diminished by 5.6% and 12.9% in the T65 and T105 groups, respectively, when compared with their controls. In contrast, the sinusoidal space increased by 17% in the T105 group and decreased by 9.6% in the T65 group. CONCLUSION: The use of supra-physiological doses of AAS promotes structural changes in the rat penis, by altering the proportions of corpus cavernosum tissues, in both pubertal and adult treated animals. .

Traumatic neuroma of the penis after circumcision - Case report

Abstract Traumatic neuromas are tumors resulting from hyperplasia of axons and nerve sheath cells after section or injury to the nervous tissue1. We present a case of this tumor, confirmed by anatomopathological examination, in a male patient with history of circumcision. Knowledge of this entity is very important in achieving the differential diagnosis with other lesions that affect the genital area such as condyloma acuminata, bowenoid papulosis, lichen nitidus, sebaceous gland hyperplasia, achrochordon and pearly penile papules.

Application of Human Amniotic Membrane in Canine Penile Tunica Albuginea Defect: First Step toward an Innovating New Method for Treatment of Peyronie?s Disease

Purposes To evaluate the efficacy of human amniotic membrane (AM) grafting in the canine penile tunica albuginea defect; we developed an animal model as the first step toward an innovating new method for the treatment of Peyronie’s disease, penile cancers, and congenital deformities of the penis. Material and Methods From August to September 2011, ten healthy male dogs were selected. A rhomboid incision about 3x2cm over the tunica albuginea and its overlying squamous epithelium was made and then excised. The amniotic membrane was folded twice on itself and grafted on the defect. After 8 weeks, artificial erection was made for 5 dogs and for the other 5 dogs after 12 weeks. After artificial erection, partial penectomy was done and histopathological evaluation was performed on the grafts. Results Artificial erection performed successfully in all of the dogs. No infection or any other complication was seen. Histopathological examination showed complete re-epithelialization with squamous epithelium and collagen fiber deposition. Also, no dysplasia was seen. Conclusions The amniotic membrane can be used as a suitable substitution for tunica albuginea. It is safe, inexpensive, biodegradable, and available and may be used for the treatment of Peyronie’s disease, penile cancers, congenital penile deformities, and penile reconstructive surgery. .