应用Snodgrass尿道成形术治疗远端尿道下裂

目的探讨Snodgrass尿道成形术治疗远端尿道下裂的体会。方法2001-2005年应用Snodgrass尿道成形术治疗146例尿道下裂。年龄1～16岁，平均3岁。其中治疗首诊病例62例；治疗已经过手术修复失败的病例84例。在同期，修复远端尿道下裂应用最多的是加盖岛状皮瓣法（onlay island flap法），共266例。结果首诊Snodgrass手术62例，成功57例（91．9％），2例尿道狭窄，3例尿道瘘。对失败的尿道下裂病例应用Snodgrass手术84例，成功64例（76．2％），尿道瘘14例，尿道狭窄6例。Onlay手术266例，成功256例（96．2％），尿道瘘10例。结论Snodgrass尿道成形术适合尿道板发育好的无阴茎下弯的远端尿道下裂病例，以及部分失败的尿道下裂修复、长段尿道瘘病例。尿道板发育差的病例适合Onlay手术。     

尿道板纵切卷管尿道成形术在失败的尿道下裂治疗中的应用

目的 探讨尿道板纵切卷管尿道成形术（Snodgrass法）在失败的尿道下裂病例治疗中的应用。方法 2001～2005年应用Snodgrass尿道成形术治疗失败的尿道下裂病例84例。年龄2～16岁，平均3．7岁。并与在同期应用Duplay尿道成形术修复的阴茎皮肤充裕的失败尿道下裂76例作比较。结果 应用Snodgrass手术84例，成功64例（76．2％）；尿道瘘14例，尿道狭窄6例。Duplay手术76例，成功61例（80．3％），尿道瘘11例，尿道狭窄5例。结论Snodgrass尿道成形术用于阴茎腹侧皮肤少的失败尿道下裂病例修复，可取得满意效果。     

应用Snodgrass手术治疗小儿尿道下裂

目的 探讨Snodgrass手术在治疗小儿尿道下裂中的应用.方法 采用Snodgrass手术治疗尿道下裂122例,年龄1～12岁,平均3岁.其中首诊病例76例,治疗术后尿道裂开病例46例.结果 首诊Snodgrass手术76例,成功65例(85.5%),8例尿瘘,3例尿道狭窄.术后尿道裂开病例46例,成功35例(76.1%),尿瘘9例,尿道狭窄2例.结论 Snodgrass尿道成形术适合无阴茎下弯或轻中度下弯的尿道下裂,以及大部分术后尿道裂开的病例.该术式取材方便、操作简单,疗效满意.     

预置"尿道板"的分期手术治疗严重尿道下裂

目的 评价分期手术治疗严重尿道下裂的效果.方法 2001年12月至2009年8月治疗27例严重尿道下裂患儿,年龄8个月至17岁,平均4.3岁.近端型伴重度阴茎下弯23例,既往手术失败组织挛缩4例.Ⅰ期手术:完全脱套包皮,切除阴茎腹侧纤维束带或瘢痕组织,完全伸直阴茎,游离带蒂岛状包皮内板转移至腹侧填补缺损,预置"尿道板",包皮内板缺乏侧取下唇口腔黏膜皮瓣.术后6个月Ⅱ期手术:手术方式采用尿道板纵切卷管尿道成形术.4例皮瓣与尿道板连接处出现瘢痕愈合,予瘢痕切除,口腔黏膜镶嵌后卷管成形尿道.结果 27例患儿中,无尿道狭窄、皮瓣坏死等发生,4例术后尿瘘,6个月后再修补.结论 严重尿道下裂病例采用预置"尿道板"的分期手术,单次的手术操作简化,充分结合了传统尿道板卷管术式的优点,成功率高,整形效果好.     

预置"尿道板"的分期手术治疗严重尿道下裂

目的 评价分期手术治疗严重尿道下裂的效果.方法 2001年12月至2009年8月治疗27例严重尿道下裂患儿,年龄8个月至17岁,平均4.3岁.近端型伴重度阴茎下弯23例,既往手术失败组织挛缩4例.Ⅰ期手术:完全脱套包皮,切除阴茎腹侧纤维束带或瘢痕组织,完全伸直阴茎,游离带蒂岛状包皮内板转移至腹侧填补缺损,预置"尿道板",包皮内板缺乏侧取下唇口腔黏膜皮瓣.术后6个月Ⅱ期手术:手术方式采用尿道板纵切卷管尿道成形术.4例皮瓣与尿道板连接处出现瘢痕愈合,予瘢痕切除,口腔黏膜镶嵌后卷管成形尿道.结果 27例患儿中,无尿道狭窄、皮瓣坏死等发生,4例术后尿瘘,6个月后再修补.结论 严重尿道下裂病例采用预置"尿道板"的分期手术,单次的手术操作简化,充分结合了传统尿道板卷管术式的优点,成功率高,整形效果好.     

预置"尿道板"的分期手术治疗严重尿道下裂

目的 评价分期手术治疗严重尿道下裂的效果.方法 2001年12月至2009年8月治疗27例严重尿道下裂患儿,年龄8个月至17岁,平均4.3岁.近端型伴重度阴茎下弯23例,既往手术失败组织挛缩4例.Ⅰ期手术:完全脱套包皮,切除阴茎腹侧纤维束带或瘢痕组织,完全伸直阴茎,游离带蒂岛状包皮内板转移至腹侧填补缺损,预置"尿道板",包皮内板缺乏侧取下唇口腔黏膜皮瓣.术后6个月Ⅱ期手术:手术方式采用尿道板纵切卷管尿道成形术.4例皮瓣与尿道板连接处出现瘢痕愈合,予瘢痕切除,口腔黏膜镶嵌后卷管成形尿道.结果 27例患儿中,无尿道狭窄、皮瓣坏死等发生,4例术后尿瘘,6个月后再修补.结论 严重尿道下裂病例采用预置"尿道板"的分期手术,单次的手术操作简化,充分结合了传统尿道板卷管术式的优点,成功率高,整形效果好.     

Snodgrass尿道成形术治疗冠状沟及阴茎体中间型尿道下裂

目的总结Snodgrass尿道成形术治疗冠状沟及阴茎体中间型尿道下裂的经验。方法回顾性分析2006--2010年采用Snodgrass尿道成形术治疗的483例冠状沟及阴茎体中间型尿道下裂患儿的临床资料,总结手术方法、术后并发症及处理。结果患儿手术年龄8个月至14岁,平均4岁8个月,手术时间45～100min,平均68min。术后并发症的总发生率为5．2％,其中术后尿道瘘3．5％,尿道口狭窄2．3％,伤口感染及裂开1．0％,阴茎扭转2．1％,尿道憩室0．4％。冠状沟型与阴茎体中间型尿道下裂术后并发症的发生率比较,无统计学意义。尿道瘘及尿道憩室经再次手术成形尿道治愈,尿道口狭窄经扩张尿道口改善。结论Snodgrass尿道成形术手术时间短,并发症少,并发症较容易处理,是治疗冠状沟及阴萃体中间型尿道下裂的合适手术方式。     

Snodgrass尿道成形术在小儿尿道下裂中的应用

目的 总结Snodgrass尿道成形术治疗小儿尿道下裂的适应证及方法、并评价其疗效。方法总结行Snodgrass尿道成形术的78例尿道下裂患儿的病例资料,其中冠状沟型18例,阴茎体型54例,阴茎阴囊型6例。14例为尿道成型失败者,52例合并阴茎下弯畸形行阴茎背侧12点处白膜折叠短缩,留置导尿管12～14d。拔管后常规前尿道扩张。结果术后随访4个月～2年,一次手术成功71例（91．0％）,阴茎外观正常。无下弯畸形,尿道口位于阴茎头正位,成纵行裂隙状,排尿通畅,无尿道狭窄。7例（9．0％）发生尿道瘘,经尿道扩张后自愈2例,4例已行尿瘘修补术,1例再行Snodgrass尿道成形术,均成功。结论Snodgrass尿道成形术适用于近、远端型,无或有轻中度阴茎下弯,尿道板发育良好的患儿,手术保留了尿道板,操作简单,并发症较少,手术成形效果好,易于掌握及推广。对尿道成形失败而阴茎所剩皮肤极少者也是一个非常有效的手术方法。     

Snodgrass手术在治疗失败尿道下裂中的应用

目的探讨尿道板纵切卷管尿道成形术(Snodgrass法)对治疗失败尿道下裂的临床疗效。方法回顾性分析广州军区总医院泌尿外科2002年3月-2011年4月接受Snodgrass法治疗的81例阴茎皮肤少的治疗失败尿道下裂患者的临床资料,并与36例同期应用Duplay尿道成形术修复的阴茎皮肤相对充裕的治疗失败尿道下裂患者进行比较。2种治疗方法均留置尿道U形支架管,U形支架管两端分别从会阴部尿道及尿道外口引出,均采用肉膜瓣覆盖成形尿道。结果随访6个月～2 a,应用Snodgrass手术治疗81例,成功65例(80.2%),术后并尿道瘘11例,尿道狭窄5例。Duplay尿道成形术治疗36例,成功29例(80.6%),术后并尿道瘘5例,尿道狭窄2例。2组手术成功率比较差异无统计学意义(P>0.05)。结论 Snodgrass手术用于儿童阴茎皮肤少的治疗失败尿道下裂的修复,可取得满意效果。     

阴囊中缝带蒂皮瓣转移覆盖在尿道下裂多次手术皮肤缺损患儿中的应用

目的分析重度尿道下裂多次手术皮肤缺损患儿采用口腔黏膜镶嵌式尿道成形阴囊中缝带蒂皮瓣转移覆盖术的治疗效果。方法收集2013年10月至2016年10月间入住本院的16例尿道下裂手术治疗失败需再次手术病例,年龄4~13岁,平均年龄7.5岁。尿道重塑均采用口腔黏膜镶嵌尿道成形术,再游离阴囊中缝带蒂皮瓣将之转移至阴茎腹侧创区皮肤缺损处,均顺利完成手术。结果16例患儿术后均通过电话预约门诊复查完成随访,随访时间12~24个月,平均随访时间为15个月。患儿阴囊中缝转移皮瓣均成活,排尿顺畅,尿道外口位置良好,无尿道憩室和尿道瘘发生,阴茎阴囊外观患儿家长满意。结论多次进行手术修补失败的尿道下裂患儿采用口腔黏膜镶嵌尿道成形术重塑尿道后联合阴囊中缝带蒂皮瓣转移覆盖术治疗,术后患儿阴茎阴囊外观满意,无尿道憩室尿道瘘发生,疗效满意,治愈率高,值得临床推广应用。     

445例先天性尿道下裂的治疗

目的 探讨不同术式对445例不同类型先天性尿道下裂患儿的手术治疗效果。方法 回顾性分析我院1988年—2003年445例先天性尿道下裂病例资料，其中采用阴茎阴囊纵隔带蒂皮瓣尿道成型术311例，包皮内板带蒂皮瓣尿道成型术52例，包皮及阴茎阴囊联合皮瓣尿道成型术61例，膀胱粘膜代尿道术21例。每例均同时行耻骨上膀胱造瘘术。结果 治愈率90．6％，并发症为9．4％。其中尿道狭窄11例，尿瘘31例。尿道狭窄中膀胱粘膜法1例，包皮内板法2例，阴茎阴囊纵隔法5例，联合皮瓣法3例；尿瘘中膀胱粘膜法1例，包皮内板法3例，阴茎阴囊纵隔法24例，联合皮瓣法3例。结论 根据尿道下裂类型选择不同的术式 尿流改道，并严格遵守整形外科的原则是尿道下裂手术成功的关键。     

Mouth mucosa free-flap grafts in repeat operations of hypospadias

BACKGROUND AND AIMS: Buccal mucosal grafts are widely used in the treatment of primary hypospadias and urethral stenosis owing to their elasticity, optimal attachment, possibility of generous harvesting and easy preparation. The aim of this study was to check whether buccal mucosal flaps are also valuable in redo surgery for hypospadias complicated by large breaks in the urethra and with scarce residual genital tissue. METHODS: Fourteen patients aged between 3 and 11 years old (mean age 6.6) were selected and operated between December 1993 and June 1999. The patients presented extensive fistulous tracts, roughly ellipsoidal in shape and with a maximum diameter of between 7 and 42 mm (mean length 18 mm). The original technique was: Duplay (7 patients); Onlay buccal graft (1 patient); Snodgrass (1 patient); Tubulised preputial flap (2 patients); Onlay preputial graft (2 patients); Tubulised vesical mucosal flap (1 patient). The mucosal flap, taken from the lower lip, was used to cover the gap as an onlay patch and recovered with residual genital skin with the interposition, where possible, of a de-epithelised flap. RESULTS: An optimal cosmetic and functional result was achieved in 10/14 cases with flowmetry > 25 percentile according to Toguri nomograms. Three patients presented fistulas: one punctiform fistula resolved spontaneously. The other two cases resolved after corrective surgery. One patient showed meatal regression with slight stenosis that was resolved with MAGPI. CONCLUSIONS: These results appear to be encouraging. Buccal mucosal graft may represent a valid alternative also in the treatment of secondary hypospadia with large breaks in the urethra. No complication was reported in the harvesting area, even if this was carried out at a second stage in the labial area.     

Use of an inner preputial free graft to extend the indications of Snodgrass hypospadias repair (Snodgraft)

Tubularized incised plate (tip) urethroplasty or Snodgrass repair has become the most commonly used procedure for distal hypospadias repair. However, where the urethral plate is narrow or shallow, the good results may be compromised. We present our experience of using a small inner preputial graft to deepen and widen the urethral plate (Snodgraft). This procedure has certainly reduced the number of two-stage hypospadias repairs in patients who lack a urethral groove or have a small glans. The cosmetic and functional results are excellent.     

Single-stage correction of posterior hypospadias (178 cases). Comparison of three techniques: free skin graft, free bladder mucosal graft, transverse pedicle preputial graft.

Three techniques have been developed for single-stage repair of posterior hypospadias: free skin grafts, free bladder mucosal grafts, and pedicle preputial grafts. This multicenter retrospective study of 178 children who underwent surgery for posterior hypospadias was designed to compare the results achieved with these procedures. Free skin grafts (15 cases) resulted in the most frequent complications, and in particular the most severe strictures; in our opinion this technique should be abandoned. Pedicle preputial grafts (133 cases) gave the greatest number of successes from the outset, and should be preferred whenever the dimensions of the prepuce are sufficient for urethroplasty. Results with bladder mucosal grafts (30 cases) were not as good as with preputial grafts, but this technique remains the only solution when the meatus is in a very posterior position, and for children who have already undergone multiple operations.