RESUMO
OBJECTIVE: Because the literature on the predictive value of fetal urinalysis is controversial in fetuses with lower urinary tract obstruction, we determined the best model of fetal urine biochemical markers correlated with long-term postnatal renal function based on glomerular filtration rate (GFR). METHOD: This retrospective study concerned 89 fetuses with lower urinary tract obstruction and their renal function after 10 years of age. We correlated fetal urine biochemical markers (total protein, ß2-microglobulin, sodium, chloride, glucose, calcium, and phosphorus) with GFR at 10 to 30 years of age in 89 patients with posterior urethral valves. We defined five stages of chronic kidney disease (CKD). RESULTS: Of the 89 patients, 18 (20%) are 20 years old or over. Postnatal renal function was good in 67.4% (GFR > 60 mL/min/1.73 m2 ) and poor in 17% (GFR < 30 mL/min/1.73 m2 ). All fetal urine markers differed between CKD stage 1 + 2 and CKD stage 4 + 5 (P < 0.001). ß2-microblobulin showed an 87% sensitivity for a 72% specificity. A combination of ß2-microglobulin and chloride gave the best results (93% sensitivity and 71% specificity) versus amniotic fluid volume (80% sensitivity and 73% specificity). CONCLUSION: Fetal urine biochemistry predicts long-term (10-30 years) postnatal renal function.
Assuntos
Doenças Fetais/urina , Insuficiência Renal Crônica/fisiopatologia , Insuficiência Renal Crônica/urina , Obstrução Uretral/urina , Microglobulina beta-2/urina , Biomarcadores/urina , Criança , Cloretos/urina , Feminino , Doenças Fetais/diagnóstico por imagem , Doenças Fetais/etiologia , Taxa de Filtração Glomerular , Humanos , Masculino , Oligo-Hidrâmnio/diagnóstico por imagem , Oligo-Hidrâmnio/etiologia , Valor Preditivo dos Testes , Gravidez , Prognóstico , Insuficiência Renal Crônica/congênito , Insuficiência Renal Crônica/etiologia , Estudos Retrospectivos , Obstrução Uretral/congênito , Obstrução Uretral/diagnóstico por imagem , Obstrução Uretral/etiologia , UrináliseRESUMO
In recent years, considerable advances have been made in our understanding of genetics of mammalian gonad development; however, the underlying genetic aetiology in the majority of patients with 46,XY disorders of sex development (DSD) still remains unknown. Based on mouse models, it has been hypothesized that haploinsufficiency of the Friend of GATA 2 (FOG2) gene could lead to 46,XY gonadal dysgenesis on specific inbred genetic backgrounds. Using whole exome sequencing, we identified independent missense mutations in FOG2 in two patients with 46,XY gonadal dysgenesis. One patient carried a non-synonymous heterozygous mutation (p.S402R), while the other patient carried a heterozygous p.R260Q mutation and a homozygous p.M544I mutation. Functional studies indicated that the failure of testis development in these cases could be explained by the impaired ability of the mutant FOG2 proteins to interact with a known regulator of early testis development, GATA4. This is the first example of mutations in the coding sequence of FOG2 associated with 46,XY DSD in human and adds to the list of genes in the human known to be associated with DSD.
Assuntos
Proteínas de Ligação a DNA/genética , Proteínas de Ligação a DNA/metabolismo , Transtorno 46,XY do Desenvolvimento Sexual/genética , Transtorno 46,XY do Desenvolvimento Sexual/patologia , Fator de Transcrição GATA4/metabolismo , Testículo/anormalidades , Fatores de Transcrição/genética , Fatores de Transcrição/metabolismo , Exoma , Feminino , Estudos de Associação Genética , Células HEK293 , Heterozigoto , Homozigoto , Humanos , Masculino , Modelos Moleculares , Mutação de Sentido Incorreto , Linhagem , Análise de Sequência de DNA , Testículo/metabolismoRESUMO
PURPOSE: We review our experience with Q-flap urethroplasty in children with Y-type urethral duplication. MATERIALS AND METHODS: Six children with Y-type urethral duplication underwent 1-stage urethral reconstruction using Q-flap urethroplasty between 1988 and 2012. The ventral hypospadiac urethra was always the functional one, and, therefore, was used for urethroplasty. RESULTS: Mean age at surgery was 5 years (range 1 to 13). All 6 patients had an excellent cosmetic result, with a normal appearing penis, a large apical meatus and no skin chordee. All 6 voided normally. None of the 6 children required reoperation. The only complications were urethral stenosis in 2 patients and lower urinary tract infection in 3. Cosmetic and functional results were analyzed during a mean followup of 8 years (range 1 to 12). CONCLUSIONS: Q-flap urethroplasty provides a long penile skin flap that allows 1-stage reconstruction in children with Y-type urethral duplication, with good cosmetic and functional results.
Assuntos
Retalhos Cirúrgicos , Uretra/anormalidades , Uretra/cirurgia , Adolescente , Criança , Pré-Escolar , Humanos , Lactente , Masculino , Procedimentos Cirúrgicos Urológicos Masculinos/métodosRESUMO
PURPOSE: We prospectively evaluated the efficacy of dextranomer/hyaluronic acid based implants for the endoscopic treatment of neurogenic urinary incontinence. MATERIALS AND METHODS: We prospectively studied patients undergoing endoscopic injection of dextranomer/hyaluronic acid for structural incontinence beginning in October 1997. Preoperative evaluation consisted of medical history, incontinence charts, urine culture, urinary tract ultrasound and videourodynamics, which were repeated regularly during followup. At each evaluation patients were classified as cured or significantly improved (treatment success), or not significantly improved (treatment failure). Followup ranged from 1 to 13 years (mean 7.4). RESULTS: A total of 48 patients 5 to 20 years old with congenital (45 patients) or acquired (3) neurogenic bladder suffering from severe sphincteric incompetence were included. Of the patients 30 underwent 1, 13 underwent 2 and 5 underwent 3 treatment sessions. Mean injected volume was 4.6 ml per session. Five patients had previously undergone bladder neck surgery. Two patients lost to followup in the short term were classified as treatment failures. Of the patients 45 had more than 2 years of followup, of whom 19 (39.6%) were dry, 6 (12.5%) were significantly improved and 23 (47.9%) had no significant improvement observed. Female patients achieved a significantly higher success rate than males (p = 0.05). No significant clinical or urodynamic criterion was predictive of success or failure. Posttreatment bladder deterioration developed in 10 cases (7 successes and 3 failures), which were managed by bladder augmentation. CONCLUSIONS: Endoscopic treatment of neurogenic urinary sphincter insufficiency with dextranomer/hyaluronic acid is effective in half of the patients. Recurrence of incontinence after 1 year is mainly a sign of bladder deterioration.
Assuntos
Dextranos/administração & dosagem , Ácido Hialurônico/administração & dosagem , Bexiga Urinaria Neurogênica/complicações , Incontinência Urinária/etiologia , Incontinência Urinária/terapia , Adolescente , Criança , Pré-Escolar , Cistoscopia , Feminino , Humanos , Injeções/métodos , Masculino , Estudos Prospectivos , Próteses e Implantes , Fatores de Tempo , Resultado do Tratamento , Adulto JovemRESUMO
OBJECTIVE: To compare the sex specific outcome of fetuses with prenatally detected urinary tract dilatation, with the exclusion of pyelectasia. METHOD: Included in the study were 709 cases of major dilatation of the fetal urinary tract, diagnosed at routine ultrasound scan. For each sex group, cases were divided into two subgroups depending on the level of dilatation. Final diagnosis was based on postnatal evaluation or on fetal autopsy. Postnatal renal function was evaluated using serum creatinine at two years of age. RESULTS: Bilateral higher urinary tract dilatation was prenatally observed in 148 (20.8%) and lower urinary tract obstruction or bladder dilatation in 561 (79.1%) of the 709 cases (121 female and 588 male fetuses) (P <0.001). Bladder dilatation was less frequent in female fetuses (62%) than in males (82.6%) (P <0.001). At final diagnosis, associated malformations were observed in 53.7% of female fetuses versus 11% in males (P <0.001). The survival rate was 42.7%. Postnatal renal function, evaluated in 289/303 live infants, was impaired in 29.7% of cases and depended on the level of obstruction, but not on the sex. CONCLUSION: Prenatally detected urinary tract dilatation has a poor prognosis both in male and female fetuses. Associated malformations are observed more frequently in female than in male fetuses.
Assuntos
Anormalidades Múltiplas/fisiopatologia , Dilatação Patológica/fisiopatologia , Doenças Fetais/fisiopatologia , Obstrução Ureteral/fisiopatologia , Obstrução Uretral/fisiopatologia , Sistema Urinário/fisiopatologia , Anormalidades Múltiplas/diagnóstico por imagem , Aborto Induzido , Adolescente , Adulto , Dilatação Patológica/diagnóstico por imagem , Duodeno/anormalidades , Duodeno/diagnóstico por imagem , Duodeno/fisiopatologia , Feminino , Morte Fetal , Doenças Fetais/diagnóstico por imagem , Humanos , Lactente , Recém-Nascido , Masculino , Gravidez , Resultado da Gravidez , Fatores Sexuais , Ultrassonografia Pré-Natal , Obstrução Ureteral/diagnóstico por imagem , Obstrução Uretral/diagnóstico por imagem , Bexiga Urinária/anormalidades , Bexiga Urinária/diagnóstico por imagem , Bexiga Urinária/fisiopatologia , Sistema Urinário/diagnóstico por imagemRESUMO
Circumcision is the most common surgical procedure in boys. Even if the procedure is frequent, circumcision can have tragic complications. We report the cases of six children, seen over 1 year at the emergency department for bleeding complication or mutilation after ritual home circumcision. To avoid such complications, it is recommended that circumcision should be performed by doctors trained in this procedure. Parents have to be cautioned about the risks of possible complications after this procedure.
Assuntos
Comportamento Ritualístico , Circuncisão Masculina/efeitos adversos , Hemorragia/etiologia , Pré-Escolar , Humanos , Recém-Nascido , MasculinoRESUMO
PURPOSE: We compared the functional results of 1-stage perineal urethrocervicoplasty and vulvoplasty vs the classic Young-Dees procedure for incontinent female epispadias. MATERIALS AND METHODS: We treated 14 female patients with incontinent epispadias between 1997 and 2007, of whom 7 each underwent the Young-Dees procedure until 2004 (group 1) and 1-stage urethrocervicoplasty with vulvoplasty through a perineal subsymphyseal approach (group 2). We retrospectively compared patient age at surgery, bladder capacity, continence outcome and postoperative morbidity. RESULTS: The groups were comparable except for age at procedure. In group 1 vs 2 surgery was performed at a median age of 6 vs 4 years. In groups 1 and 2 median preoperative bladder capacity was 120 and 100 cc, and mean followup was 8 and 2.5 years, respectively. Six group 1 patients achieved continence, including 5 with overnight continence, but 5 required additional surgery to enhance continence or voiding, including pericervical injections of bulking agents (3), cervicotomy or urethral calibration (4) and enterocystoplasty (1). Two patients required long-term clean intermittent catheterization, 4 underwent upper tract dilation postoperatively and 4 had a total of 8 episodes of febrile urinary tract infection. Six group 2 patients were continent, including 3 with overnight continence (p = 1). None required clean intermittent catheterization even temporarily or any additional surgery (p = 0.02). Only 2 patients had a febrile urinary tract infection (p = 0.25). CONCLUSIONS: Reconstructing the bladder neck and urethra via a perineal approach for female epispadias is promising. Surgery may be performed earlier with similar continence results, less postoperative morbidity and less need for additional surgery. Long-term studies are needed to confirm these preliminary results.
Assuntos
Epispadia/cirurgia , Uretra/cirurgia , Bexiga Urinária/cirurgia , Adolescente , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Períneo , Estudos Retrospectivos , Procedimentos Cirúrgicos Urológicos/métodosRESUMO
PURPOSE: Diagnosis and management of the complete androgen insensitivity syndrome have dramatically changed in the last few decades, with earlier diagnosis and the development of molecular biology. Some phenotypic features such as development of wolffian and mullerian remnants have been suggested to be an index of subtle residual androgen activity. Variations of these features clearly exist among patients and may influence treatment. Our aim was to assess the safety of keeping gonads in place for spontaneous puberty in a cohort of patients with genetically proved complete androgen insensitivity syndrome. In parallel to the risks of virilization at puberty and gonadal tumor some additional features, such as need for vaginal surgery, were investigated. MATERIALS AND METHODS: We studied the genotype, phenotype, anatomy of the internal and external genitalia, and clinical outcome of 29 cases of complete androgen insensitivity syndrome, managed by the same team from diagnosis (frequently in early childhood) to adulthood. RESULTS: All patients had a complete female phenotype. A total of 19 different mutations (including 7 unreported) were found. Each family presented with a different mutation. No somatic mosaicism was detected. Vas deferens and epididymis were found in all types of mutations (missense, nonsense and frameshift). Of the patients 23 were postpubertal (19 spontaneously). No postpubertal virilization occurred. Only 1 carcinoma in situ was detected (postpubertally). Vaginal surgery was rarely necessary. CONCLUSIONS: Our data advocate for keeping the gonads in the complete androgen insensitivity syndrome, at least until completion of spontaneous puberty. The risk of virilization at puberty should be ruled out for each androgen receptor mutation before management decisions and genetic counseling. Vaginal surgery should not be indicated as first line treatment.
Assuntos
Síndrome de Resistência a Andrógenos/genética , Androgênios/metabolismo , Predisposição Genética para Doença/epidemiologia , Genótipo , Fenótipo , Receptores Androgênicos/genética , Adolescente , Síndrome de Resistência a Andrógenos/epidemiologia , Síndrome de Resistência a Andrógenos/terapia , Criança , Pré-Escolar , Estudos de Coortes , Seguimentos , Aconselhamento Genético , Humanos , Incidência , Masculino , Mutação , Linhagem , Receptores Androgênicos/metabolismo , Fatores de TempoRESUMO
PURPOSE: Surgical simulation has benefited from a surge in interest over the last decade because of the increasing need for a change in the traditional apprenticeship model of teaching surgery. Open surgery for ureteropelvic junction (UPJ) poses unique training challenges owing to smaller workspaces, and finer sutures used that require increased surgical dexterity when compared with adult analogues. We describe the development and face validation of a low-cost training simulator for open dismembered pyeloplasty. MATERIALS AND METHODS: The simulator is built with A4 Kraft envelopes, catheter tip syringe filled with 30mL of air, tape, 260 modeling balloon, and 11-in party balloon. Evaluation of the device is based on an evaluation form including 11 items on a 5-point Likert-type scale. Thirty-one departments of pediatric surgery in France were contacted and received a pack containing 4 to 10 devices, already set up and ready for use, a tutorial and an evaluation form. Candidates were stratified according to their level of expertise. RESULTS: A total of 180 devices were sent. Procedures on the device were performed 118 times (65%) by expert surgeons (n = 44), fellows (n = 25), and residents (n = 49). Statistically significant difference was noted for 4 items (anatomy, model exposition, UPJ resection, and difficulty) for the 3 levels of expertise. The global score evaluation for realistic items, face validity, and usability was 4.2 (range: 1-5). CONCLUSION: This low-cost model is evaluated as an efficient tool for UPJ teaching and training. It shows promise as an educational tool.
Assuntos
Redução de Custos , Pelve Renal/cirurgia , Nefrotomia/educação , Treinamento por Simulação/métodos , Criança , Competência Clínica , França , Humanos , Modelos Anatômicos , Pediatria , Reprodutibilidade dos Testes , Treinamento por Simulação/economiaRESUMO
OBJECTIVE: To assess genetic mutations and associated somatic anomalies in a series of patients with 46,XY gonadal dysgenesis (GD). DESIGN: Single center retrospective study. SETTING: University pediatric hospital. PATIENT(S): Fourteen patients with 46,XY GD. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): Genotype-phenotype relationship. RESULT(S): The presenting symptom was disorders of sex development (6 patients), primary amenorrhea (2 patients), discordance between 46,XY karyotype and female external genitalia (3 patients), discovery of Müllerian structures at surgery (2 patients), or diagnosed in the evaluation of a gonadal tumor (1 patient). Müllerian structures were shown by ultrasound evaluation in 7 of 13 patients, genitography in 3 of 6 patients and/or surgery in 8 of 10 patients (3 not seen at imaging), or only by histologic examination (1 patient). Three patients had gonadoblastoma and/or seminoma. A mutation was found in 7 patients of whom 2 had family history of reproductive problems and 5 had associated somatic anomalies. The mutations were FOG2/ZFPM2 (1 patient), SRY (2 patients), WT1 (1 patient), or deletions of distal chromosome 9p (3 patients). Among the three other patients with associated anomalies and no mutation, two had ectodermal dysplasia and one had leukemia. CONCLUSION(S): Mutations were observed in half of the patients with 46,XY GD with Müllerian structures. We also describe for the first time the association between GD and ectodermal dysplasia. Müllerian structures can be found in some cases only by histologic examination, which should be coupled to preventive gonadectomy because of the risk of tumor formation.
Assuntos
Disgenesia Gonadal 46 XY/genética , Ductos Paramesonéfricos/anormalidades , Mutação , Amenorreia/genética , Amenorreia/fisiopatologia , Deleção Cromossômica , Cromossomos Humanos Par 9 , Análise Mutacional de DNA , Proteínas de Ligação a DNA/genética , Displasia Ectodérmica/genética , Feminino , Estudos de Associação Genética , Predisposição Genética para Doença , Disgenesia Gonadal 46 XY/diagnóstico , Disgenesia Gonadal 46 XY/fisiopatologia , Disgenesia Gonadal 46 XY/cirurgia , Gonadoblastoma/genética , Gonadoblastoma/patologia , Humanos , Masculino , Ductos Paramesonéfricos/diagnóstico por imagem , Ductos Paramesonéfricos/cirurgia , Neoplasias Ovarianas/genética , Neoplasias Ovarianas/patologia , Paris , Fenótipo , Estudos Retrospectivos , Seminoma/genética , Seminoma/patologia , Proteína da Região Y Determinante do Sexo/genética , Neoplasias Testiculares/genética , Neoplasias Testiculares/patologia , Fatores de Transcrição/genética , Ultrassonografia , Proteínas WT1/genéticaRESUMO
Hermaphroditism is a general term referring to all discrepancies between phenotype and genotype of sex development. It must be preferred to sexual ambiguity which refers mainly to external genitalia anomalies. Hermaphroditism is studied on an historical and pathogenetical perspective. Short embryological summaries are integrated. The defects of sexual differentiation due to hormone deficiency are first studied: androgen insensitivity, steroid 5 alpha-reductase 2 deficiency, defects of testosterone synthesis, persistant mullerian ducts syndrome. Sexual determinism deficiencies are then presented: Turner syndrome, XX males, pure gonadal dysgenesis, true hermaphroditism, mixed gonadal dysgenesis, Drash and Frasier syndrome. Tumors of dysgenetic gonads followed. Mixed tumors developed in dysgenetic gonads are gonadoblastoma and dysgerminoma. Sex cord tumors are androgen insensitivity associated tumors, Leydig cells tumors and adrenal cell inclusion tumors. Sex reversion genes open new perspectives.
Assuntos
Transtornos do Desenvolvimento Sexual/patologia , Feminino , Disgenesia Gonadal/genética , Humanos , Masculino , Análise para Determinação do Sexo , Diferenciação SexualRESUMO
OBJECTIVE: Urinary and faecal continence are key challenges goal of cloacal malformation management. Most well-known prognostic factors are the length of common channel (CC) and the presence of a sacral defect, but the impact of associated spinal dysraphism is less well documented. The aim of this study was to investigate the impact of different types of dysraphism on urinary and faecal continence in this patient population. MATERIALS AND METHODS: From 1991 to 2011, charts and office notes of 25 patients with cloacal malformation were retrospectively reviewed. At last clinic visit, urinary and faecal continence status according to Krickenbeck criteria were correlated with the length of CC, the presence of a sacral defect (sacral ratio), and the presence of different types of spinal cord dysraphism using magnetic resonance imaging (MRI) and Fisher's exact test. RESULTS: Mean follow-up was 8 years (4 months-21 years). The sacral ratio was abnormal (below 0.74) in 18 cases out of 25 (72%). MRI review showed normal spinal cord in eight out of 23 cases (Group 1), spinal cord anomaly in 15 out of 23 cases (65%) including nine cases of tethered cord complex (Group 2) and six cases of a short spinal cord (Group 3). While statistical analysis showed a difference regarding urinary prognosis between the groups (p=0.005), no significant difference was found regarding faecal prognosis. None of the six patients with short spinal cord were continent for both urinary and faecal prognosis. CONCLUSIONS: This is the first study, which highlights the impact of different types of spinal dysraphism on functional outcome in patients with cloaca. Short spinal cord seemed to carry the worst prognosis. A prospective study with a larger series is mandatory to confirm these preliminary results.
Assuntos
Anus Imperfurado/epidemiologia , Incontinência Fecal/epidemiologia , Disrafismo Espinal/epidemiologia , Incontinência Urinária/epidemiologia , Malformações Anorretais , Anus Imperfurado/classificação , Criança , Pré-Escolar , Incontinência Fecal/classificação , Feminino , Humanos , Lactente , Recém-Nascido , PrognósticoRESUMO
PURPOSE: The aim of this study was to evaluate the ability of prenatal ultrasound markers to predict postnatal renal prognosis in fetuses with posterior urethral valves. METHODS: Medical files on fetuses with prenatal diagnosis of posterior urethral valves from 2000 to 2006 were reviewed retrospectively. Data from prenatal follow-up included gestational age at diagnosis, ultrasound renal parenchyma evaluation, and presence and time of oligohydramnios onset. Prenatal parameters studied were correlated to postnatal renal function. RESULTS: Thirty-one male fetuses were included. Six pregnancies were terminated. Of the remaining 25 pregnancies that were continued, 4 children had abnormal creatine and 21 normal creatinine levels at follow-up. Presence and time of oligohydramnios onset did not differ between groups (P = .43). Ultrasound detected bilateral renal abnormalities in 3 fetuses (75%) with altered renal function, and 10 fetuses (55%) with normal creatinine, at follow-up. CONCLUSIONS: None of the ultrasound parameters evaluated were able to reliably predict postnatal renal function.
Assuntos
Falência Renal Crônica/epidemiologia , Ultrassonografia Pré-Natal , Uretra/anormalidades , Aborto Eugênico , Creatinina/sangue , Feminino , Terapias Fetais , Seguimentos , Idade Gestacional , Humanos , Rim/anormalidades , Rim/diagnóstico por imagem , Rim/fisiopatologia , Falência Renal Crônica/etiologia , Masculino , Oligo-Hidrâmnio/epidemiologia , Oligo-Hidrâmnio/etiologia , Valor Preditivo dos Testes , Gravidez , Prognóstico , Estudos Retrospectivos , Sensibilidade e Especificidade , Fatores de Tempo , Uretra/diagnóstico por imagem , Uretra/embriologia , Microglobulina beta-2/sangue , Microglobulina beta-2/urinaRESUMO
OBJECTIVE: To further investigate the molecular mechanism by which NR5A1/SF-1 mutation led to gonadal dysgenesis with predominant Sertoli cell defect. DESIGN: Genetic and functional mutation study. SETTING: University hospital. PATIENT(S): Genetic analysis of an XY newborn with hypospadias and micropenis. Puberty developed spontaneously with a rise in T levels and normal LH contrasting with high FSH and low inhibin B concentrations, revealing a Sertoli cell defect. INTERVENTION(S): None. MAIN OUTCOME MEASURE(S): NR5A1/SF-1 gene molecular analysis. RESULT(S): Genetic analysis identified a new NR5A1/SF-1 mutation, c.842G>C (p.Arg281Pro). In vitro functional studies showed that the p.Arg281Pro mutant mainly altered Sertoli cell function, as observed in vivo with a high FSH level and low inhibin B concentration contrasting with normal LH concentration. The mutation was found in the father's DNA at a low copy number through direct sequencing and high-resolution melting assay, suggesting mosaicism. CONCLUSION(S): We describe a new heterozygous NR5A1/SF-1 mutation that mainly altered Sertoli cell function. However, this 46,XY disorders of sex development (DSD) boy had no Müllerian derivatives, suggesting normal Sertoli cell function during fetal life. During puberty, Sertoli cell deficiency became more apparent. This is the first report of a progressive and predominant Sertoli cell defect in an XY patient with testicular dysgenesis owing to NR5A1/SF-1 mutation.
Assuntos
Transtorno 46,XY do Desenvolvimento Sexual/diagnóstico , Transtorno 46,XY do Desenvolvimento Sexual/genética , Pai , Células de Sertoli/patologia , Fator Esteroidogênico 1/genética , Sequência de Aminoácidos , Sequência de Bases , Contagem de Células , Análise Mutacional de DNA , Transtorno 46,XY do Desenvolvimento Sexual/patologia , Humanos , Recém-Nascido , Padrões de Herança/fisiologia , Masculino , Dados de Sequência Molecular , Mutação/fisiologiaRESUMO
BACKGROUND: Mutations of the NR5A1 gene encoding steroidogenic factor-1 have been reported in association with a wide spectrum of 46,XY DSD (Disorder of Sex Development) phenotypes including severe forms of hypospadias. METHODOLOGY/PRINCIPAL FINDINGS: We evaluated the frequency of NR5A1 gene mutations in a large series of patients presenting with 46,XY DSD and hypospadias. Based on their clinical presentation 77 patients were classified either as complete or partial gonadal dysgenesis (uterus seen at genitography and/or surgery, nâ=â11), ambiguous external genitalia without uterus (nâ=â33) or hypospadias (nâ=â33). We identified heterozygous NR5A1 mutations in 4 cases of ambiguous external genitalia without uterus (12.1%; p.Trp279Arg, pArg39Pro, c.390delG, c140_141insCACG) and a de novo missense mutation in one case with distal hypospadias (3%; p.Arg313Cys). Mutant proteins showed reduced transactivation activity and mutants p.Arg39Pro and p.Arg313Cys did not synergize with the GATA4 cofactor to stimulate reporter gene activity, although they retained their ability to physically interact with the GATA4 protein. CONCLUSIONS/SIGNIFICANCE: Mutations in NR5A1 were observed in 5/77 (6.5%) cases of 46,XY DSD including hypospadias. Excluding the cases of 46,XY gonadal dysgenesis the incidence of NR5A1 mutations was 5/66 (7.6%). An individual with isolated distal hypopadias carried a de novo heterozygous missense mutation, thus extending the range of phenotypes associated with NR5A1 mutations and suggesting that this group of patients should be screened for NR5A1 mutations.
Assuntos
Análise Mutacional de DNA , Transtorno 46,XY do Desenvolvimento Sexual/genética , Hipospadia/genética , Fator Esteroidogênico 1/genética , Adolescente , Sequência de Aminoácidos , Animais , Hormônio Antimülleriano/sangue , Bovinos , Criança , Pré-Escolar , Transtorno 46,XY do Desenvolvimento Sexual/sangue , Feminino , Heterozigoto , Humanos , Hipospadia/sangue , Lactente , Recém-Nascido , Inibinas/sangue , Masculino , Camundongos , Dados de Sequência Molecular , Fenótipo , Ratos , Estudos Retrospectivos , Fator Esteroidogênico 1/química , Fator Esteroidogênico 1/metabolismo , Ativação Transcricional/genéticaRESUMO
OBJECTIVE: To compare outcomes of the original Koyanagi technique with the Hayashi modification in severe hypospadias, i.e. hypospadias with a division of the corpus spongiosum located behind the penile midshaft associated with marked hypoplasia of the ventral aspect of the penis and a non-preservable urethral plate. Choice of technique for treating severe hypospadias is discussed. PATIENTS AND METHODS: Twenty-six patients (group I) were operated in Lyon using the original Koyanagi procedure and 31 (group II) underwent a modified Hayashi procedure in Paris. Most patients received preoperative androgenic stimulation. Mean follow up was 25 months (group I) and 34 months (group II). RESULTS: Sixteen patients (61.5%) in group I and 19 (61.3%) in group II developed complications leading to 21 additional procedures in each group. Urethral dehiscence was found in 11/26 patients in group I (42.3%), and in 6/31 patients in group II (19.3%); fistulae were respectively found in 5/26 (19.2%) and 12/31 (38.7%), and stenosis in 9/26 (34.6%) and 5/31 (16.1%) patients. Urethrocele was found in 7/26 (26.9%) and 5/31 (16%) patients, respectively. Twelve (group I) and 7 (group II) patients are awaiting re-operation. CONCLUSION: Although the complication rate is quite similar between the original and the modified Koyanagi procedure, the Hayashi technique seems to provide a better distal blood supply to the reconstructed urethra.
Assuntos
Hipospadia/cirurgia , Complicações Pós-Operatórias/cirurgia , Uretra/cirurgia , Procedimentos Cirúrgicos Urológicos Masculinos/efeitos adversos , Procedimentos Cirúrgicos Urológicos Masculinos/métodos , Adolescente , Criança , Pré-Escolar , Seguimentos , Humanos , Hipospadia/patologia , Lactente , Masculino , Pênis/anormalidades , Pênis/cirurgia , Reoperação , Índice de Gravidade de Doença , Deiscência da Ferida Operatória/cirurgia , Resultado do Tratamento , Uretra/anormalidades , Estreitamento Uretral/cirurgia , Fístula Urinária/cirurgiaRESUMO
Complete androgen insensitivity syndrome (CAIS) is an X-linked genetic disorder affecting 46,XY individuals, characterized by the loss of function of the androgen receptor gene resulting in complete peripheral androgen resistance. Patients have a nonambiguous female phenotype with normal female external genitalia. Gonads are undescended testes (either intra-abdominal or inguinal), there is no uterus and the length of the vagina is usually very short. Gender identity is always female. This review focuses on the importance of accurate diagnosis of CAIS versus partial androgen insensitivity syndrome and other disorders of sex development by genotyping the androgen receptor, and raises issues of the optimal management of these patients. In the era of the Consensus Statement on Management of Intersex Disorders, we provide new insights into CAIS screening, surgical management of the gonads (balancing between hormonal production and malignancy risk) and of vaginal adequacy, and the ethics concerned with the disclosure to patients and their families.
RESUMO
OBJECTIVES: Obstructive uterovaginal duplication is rare and frequently misdiagnosed. The aims of this study were to review all the patients managed for this malformation in our institution, evaluate their long-term outcomes, and discuss the embryologic origin of this malformation. METHODS: From 1984 to 2007, we treated 32 patients for obstructive uterovaginal duplication in our institution. We separated them in 2 groups (prepubertal [n = 8] and pubertal [n = 24]) and analyzed their clinical and radiologic presentations and their treatments. Patients >18 years of age (n = 22) were recontacted. RESULTS: For the prepubertal group, the median age at diagnosis was 6 months. Postnatal ultrasound showed an absent ipsilateral kidney in 6 case subjects, although 4 patients had a prenatal diagnosis of ipsilateral multicystic dysplastic kidney. This renal anomaly was associated with a pelvic sonolucent mass in 3 case subjects, allowing us to prenatally suspect the diagnosis. All of the patients were cured by vaginal approach. For the pubertal group, the median delay of diagnosis after menarche was 9 months. Among patients managed in an emergency setting (n = 11), there were 9 misdiagnoses with inappropriate abdominal surgeries, including 3 hysterectomies of the obstructed hemiuterus. Concerning long-term results, 5 patients were attempting to have children, with successful pregnancies for 4 of them. One patient suffered from infertility attributable to contralateral isthmic stenosis after a hysterectomy of the obstructed hemiuterus. CONCLUSIONS: Obstructive uterovaginal duplication is a benign pathology when properly managed. Therefore, management of abdominal pain in peripubertal girls should include systematic abdominal and gynecologic examinations completed by radiologic pelvic and renal evaluation. Surgical treatment should be performed by vaginal approach to avoid infertility. Concerning the origin of the malformation, the high association of prenatal dysplastic kidneys and postnatal absent kidneys suggests anomalies of both wolffian and müllerian duct development, contrasting with the classic definition of this malformation.
Assuntos
Anormalidades Múltiplas , Procedimentos Cirúrgicos em Ginecologia/métodos , Doenças Uterinas/diagnóstico , Útero/anormalidades , Vagina/anormalidades , Doenças Vaginais/diagnóstico , Adolescente , Criança , Pré-Escolar , Constrição Patológica , Diagnóstico Diferencial , Feminino , Seguimentos , Humanos , Lactente , Recém-Nascido , Imageamento por Ressonância Magnética , Prognóstico , Estudos Retrospectivos , Fatores de Tempo , Tomografia Computadorizada por Raios X , Doenças Uterinas/congênito , Doenças Uterinas/cirurgia , Doenças Vaginais/congênito , Doenças Vaginais/cirurgiaRESUMO
PURPOSE: The Mayer-Rokitansky-Kuster-Hauser syndrome (Rokitansky syndrome) is a frequently misdiagnosed congenital anomaly of the female genital tract. Of several surgical treatments sigmoid vaginoplasty is among the few that provide a functional self-lubricating neovagina. We evaluated the results of sigmoid neovagina in girls affected by the Rokitansky syndrome. MATERIALS AND METHODS: We followed 26 patients with the Rokitansky syndrome between 1990 and 2005. Diagnosis was based on clinical examination, normal ovarian hormones and pelvic ultrasound or magnetic resonance imaging. Associated anomalies were detailed. Vaginoplasty was performed in 23 patients. Functional results and complications were assessed. RESULTS: Renal anomalies were found in 11 patients (42%) and skeletal anomalies in 6 (23%). Six girls (23%) had a family history of the Rokitansky syndrome and/or renal agenesis. Vaginoplasty was performed at a mean age of 16 years (range 10.3 to 18.8). Median postoperative followup was 3.4 years. Postoperative complications included lower extremity compartment syndrome (1 patient), pelvic hematoma (1), mucosal prolapse (2), cystitis (2) and introital stenosis (1). Of the 23 patients undergoing surgery 9 (39%) had an active sex life postoperatively. CONCLUSIONS: Sigmoid vaginoplasty is a valuable procedure in girls with the Rokitansky syndrome. We recommend reconstruction during adolescence because the local conditions are excellent and it allows adaptation of the anatomy to physical development.
Assuntos
Colo Sigmoide/transplante , Procedimentos Cirúrgicos em Ginecologia/métodos , Estruturas Criadas Cirurgicamente , Vagina/anormalidades , Vagina/cirurgia , Adolescente , Criança , Feminino , Seguimentos , Humanos , Estudos Retrospectivos , Síndrome , Resultado do TratamentoRESUMO
PURPOSE: To improve treatment policy, we retrospectively evaluated the results of early corrective genital surgery in 63 sexually ambiguous patients 14 to 38 years old. MATERIALS AND METHODS: We analyzed all records classified under male pseudohermaphroditism and true hermaphroditism. Anatomical and functional results and data on self-reported satisfaction were recorded by the managing physician at the last routine followup visit. RESULTS: A total of 38 patients were raised female and 25 were raised male. Basal procedures for external genital reconstruction were initiated shortly after birth, when gender was assigned. Complementary surgical procedures were usually required later. In both sexes there was a significant negative correlation between the number of basal, but not complementary, procedures required and year of birth, due to the adoption of 1-stage procedures in the early 1980s. Most patients with gonadal dysgenesis were raised as females and menstruated under treatment but breast development was abnormal in 30%. Spontaneous puberty was observed in true hermaphrodites raised as either sex. In females with partial androgen insensitivity the main problem was shortness of the vagina. Amenorrhea and infertility often led to transient distress. In males results were poor due to intractable micropenis and minimal virilization. Results were good in 5alpha-reductase deficiency. CONCLUSIONS: Results of intersex surgery have clearly improved with time, and apart from a patient with 5alpha-reductase deficiency who underwent a successful sex change, no patient expressed dissatisfaction with sex of rearing. However, in the absence of an in-depth psychological survey, these optimistic conclusions are valid only in the settings of our study.