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Research Article| Volume 56, ISSUE 5, P489-493, July 2003

Single-stage muscle flap reconstruction of major scrotal defects: report of two cases

      Abstract

      Major scrotal defect with exposed testes and/or spermatic cords are a challenge for the reconstructive surgeon. The bacterial flora of the perineum, difficulty of immobilisation and the contour of the testes make testicular cover a difficult task [Br. J. Plast. Surg. 41 (1988) 190].
      Traditional approaches have used simple skin grafts or if not feasible, multi-staged procedures with initial burying of the testes under delayed medial thigh flaps. Better techniques then evolved to permit early single-staged coverage using flaps rather than skin grafts in these usually contaminated and unsuitable wounds to improve the cosmetic outcome of the reconstruction and reduce patient discomfort and hospital stay.
      Muscle flaps represent an excellent reconstruction option in the contaminated perineum especially in patients with impaired ability to deal with infection such as diabetic or toxic patients.
      We present two cases of reconstruction of the scrotum using simple, reliable single-stage muscle flap techniques with good aesthetic results and review the literature.

      Keywords

      Major scrotal defect with exposed testes and/or spermatic cords are a challenge for the reconstructive surgeon. The bacterial flora of the perineum, difficulty of immobilisation and the contour of the testes make testicular cover a difficult task.
      • Young W.A.
      • Wright J.K.
      Scrotal reconstruction with a rectus abdominis muscle flap.
      These defects may result from severe infection with gangrene and loss of the covering skin;
      • Young W.A.
      • Wright J.K.
      Scrotal reconstruction with a rectus abdominis muscle flap.
      • McDougal W.S.
      Scrotal reconstruction using thigh pedicle flaps.
      • Hesselfeldt-Nielsen J.
      • Bang-Jensen E.
      • Riegels-Nielsen
      Scrotal reconstruction after Fournier's gangrene.
      • Banks D.W.
      • O'Brien D.P.
      • Amerson J.R.
      • Hester T.R.
      Gracilis musculocutaneous flap scrotal reconstruction after Fournier gangrene.
      • Hallock G.G.
      Scrotal reconstruction following Fournier's gangrene using the medial thigh fasciocutaneous flap.
      • Datubo-Brown D.D.
      Alternative techniques for scrotal reconstruction.
      traumatic avulsion of the scrotal and penile skin
      • d'Alessio E.
      • Rossi F.
      • d'Alessio R.
      Reconstruction in traumatic avulsion of penile and scrotal skin.
      • Chadha A.
      • Saraiya H.
      Scrotal reconstruction using Foley catheters as tissue expanders.
      commonly caused by clothing being caught in revolving machinery,
      • Robinson D.W.
      • Stephenson K.L.
      • Padgett E.C.
      Loss of coverage of the penis, scrotum and urethra.
      • Milard Jr., D.R.
      Scrotal construction and reconstruction.
      • Reid C.F.
      • Wright Jr., J.H.
      Scrotal reconstruction following an avulsion injury.
      automobile-pedestrian accidents and falls,
      • McAninch J.W.
      • Khan R.I.
      • Jeffrey R.B.
      • Laing F.C.
      • Krieger M.J.
      Major traumatic and septic genital injuries.
      or the rare bull-horn avulsion injuries;
      • Gonzalez-Ulloa M.
      Sever avulsion of the scrotum in a bullfighter: reconstruction procedure.
      • Tiwari I.N.
      • Seth H.P.
      • Mehdiratta K.S.
      Reconstruction of the scrotum by thigh flaps.
      excision of scrotal skin diseases,
      • Hirshowitz B.
      • Peretz B.A.
      Bilateral superomedial thigh flap for primary reconstruction of scrotum and vulva.
      and genital burns.
      • Westfall C.T.
      • Keller H.B.
      Scrotal reconstruction utilizing bilateral gracilis myocutaneous flaps.
      Numerous techniques have been described for scrotal reconstruction
      • Young W.A.
      • Wright J.K.
      Scrotal reconstruction with a rectus abdominis muscle flap.
      • McDougal W.S.
      Scrotal reconstruction using thigh pedicle flaps.
      • Hesselfeldt-Nielsen J.
      • Bang-Jensen E.
      • Riegels-Nielsen
      Scrotal reconstruction after Fournier's gangrene.
      • Banks D.W.
      • O'Brien D.P.
      • Amerson J.R.
      • Hester T.R.
      Gracilis musculocutaneous flap scrotal reconstruction after Fournier gangrene.
      • Hallock G.G.
      Scrotal reconstruction following Fournier's gangrene using the medial thigh fasciocutaneous flap.
      • Datubo-Brown D.D.
      Alternative techniques for scrotal reconstruction.
      • d'Alessio E.
      • Rossi F.
      • d'Alessio R.
      Reconstruction in traumatic avulsion of penile and scrotal skin.
      • Chadha A.
      • Saraiya H.
      Scrotal reconstruction using Foley catheters as tissue expanders.
      • Robinson D.W.
      • Stephenson K.L.
      • Padgett E.C.
      Loss of coverage of the penis, scrotum and urethra.
      • Milard Jr., D.R.
      Scrotal construction and reconstruction.
      • Reid C.F.
      • Wright Jr., J.H.
      Scrotal reconstruction following an avulsion injury.
      • McAninch J.W.
      • Khan R.I.
      • Jeffrey R.B.
      • Laing F.C.
      • Krieger M.J.
      Major traumatic and septic genital injuries.
      • Gonzalez-Ulloa M.
      Sever avulsion of the scrotum in a bullfighter: reconstruction procedure.
      • Tiwari I.N.
      • Seth H.P.
      • Mehdiratta K.S.
      Reconstruction of the scrotum by thigh flaps.
      • Hirshowitz B.
      • Peretz B.A.
      Bilateral superomedial thigh flap for primary reconstruction of scrotum and vulva.
      • Westfall C.T.
      • Keller H.B.
      Scrotal reconstruction utilizing bilateral gracilis myocutaneous flaps.
      • Yu P.
      • Sanger J.R.
      • Matloub H.S.
      • Gosain A.
      • Larson D.
      Anterolateral thigh fasciocutaneous island flaps in perineoscrotal reconstruction.
      • Di Geronimo E.M.
      Scrotal reconstruction utilizing a unilateral adductor minimus myocutaneous flap.
      reflecting the challenge and complexity these defects present.
      We used a single-stage muscle flap technique to reconstruct two major scrotal defects following Fournier's gangrene which proved to be safe, reliable and simple with minimal donor site morbidity.

      1. Case presentations

      1.1 Case 1

      A 52-year-old male developed Fournier's gangrene of the scrotum and penis 3 weeks after total cystectomy and urethrectomy for recurrent advanced transitional cell carcinoma of the bladder that had temporarily responded to previous chemotherapy and radical radiotherapy.
      Intravenous antibiotics were started and extensive debridement of the skin of the penile shaft and scrotum were done leaving the testicles fully exposed. One week later, he was referred to our department to reconstruct his defect. In view of the previous radiotherapy to the abdomen and pelvis and the previous abdomino-pelvic operation, a pedicled gracilis flap reconstruction was taken. The left gracilis muscle was harvested through a longitudinal thigh incision, tunnelled under upper thigh skin and wrapped around the exposed testes. The outer surface of the muscle and the raw area of the shaft of the penis were both covered with meshed split skin grafts. The patient made an excellent recovery postoperatively (Fig. 1) .
      Figure thumbnail gr1
      Fig. 1Reconstruction sequence for Case 1. (A) Major scrotal defect with exposed testes and part of the shaft of penis. (B) Immediate postoperative. (C) One week postoperative. (D) Two years after reconstruction.

      1.2 Case 2

      A 64-year-old male presented in the A & E department with tender, red, swollen scrotum and general manifestations of infection. He gave a history of poorly controlled noninsulin dependent diabetes mellitus, and burning micturition for the previous four days. He was admitted and IV antibiotics administered.
      The scrotum rapidly developed patches of gangrene which eventually involved the whole scrotal skin. Urgent debridement was done that left both his testes and spermatic cords viable but exposed. After discussion with the patient, we planned to reconstruct the scrotum using pedicled rectus abdominis muscle flap.
      The right rectus muscle was raised through a right paramedian skin incision based on its inferior pedicle, tunnelled under the lower abdominal and pubic skin to reach the scrotum. Meshed split skin graft was applied to the outer surface of the muscle. Postoperatively, part of the skin graft was lost and the raw area was managed conservatively (Fig. 2) .
      Figure thumbnail gr2
      Fig. 2Reconstruction sequence for Case 2. (A) Fournier's gangrene of the scrotal with complete loss of scrotal skin. (B) Rectus muscle rose based on the inferior pedicle. (C) Muscle wrapped around the testes and cords. (D) At the end of reconstructive procedure. (E) Partial loss of the skin graft. (F) Complete healing.

      2. Discussion

      Reconstruction of the scrotum after complete loss of the overlying skin is a challenging problem for the reconstructive surgeon.
      • Young W.A.
      • Wright J.K.
      Scrotal reconstruction with a rectus abdominis muscle flap.
      • McDougal W.S.
      Scrotal reconstruction using thigh pedicle flaps.
      • Robinson D.W.
      • Stephenson K.L.
      • Padgett E.C.
      Loss of coverage of the penis, scrotum and urethra.
      Reconstructing the scrotum is essential not only for cosmetic reasons but also for functional and psychological reasons.
      • Gonzalez-Ulloa M.
      Sever avulsion of the scrotum in a bullfighter: reconstruction procedure.
      • Yu P.
      • Sanger J.R.
      • Matloub H.S.
      • Gosain A.
      • Larson D.
      Anterolateral thigh fasciocutaneous island flaps in perineoscrotal reconstruction.
      When trauma is the cause of scrotal skin loss, reconstruction often can be accomplished by either primary closure if sufficient scrotal skin remains or immediate application of split skin grafts. However, these techniques may not be suitable in situations in which the scrotal covering has been lost due to infection as the defect left is usually more extensive and the testicular surface may not be suitable for grafting. In these situations a more complex reconstructive procedure will be needed.
      • McDougal W.S.
      Scrotal reconstruction using thigh pedicle flaps.
      Fournier's gangrene is an acute idiopathic gangrene frequently of insidious onset followed by a fulminant progression that may lead to significant morbidity or even mortality. Although occasionally limited in extent, it is more frequently associated with significant loss of the skin of the penis, scrotum and surrounding perineum.
      • Hallock G.G.
      Scrotal reconstruction following Fournier's gangrene using the medial thigh fasciocutaneous flap.
      Many techniques have been described for scrotal reconstruction following Fournier's gangrene. Skin grafts have been described to cover the testes and cords directly.
      • Hesselfeldt-Nielsen J.
      • Bang-Jensen E.
      • Riegels-Nielsen
      Scrotal reconstruction after Fournier's gangrene.
      • Milard Jr., D.R.
      Scrotal construction and reconstruction.
      Although they may succeed, they have many certain disadvantages. It is often technically difficult to apply skin grafts to the testes and cords.
      • McDougal W.S.
      Scrotal reconstruction using thigh pedicle flaps.
      • Milard Jr., D.R.
      Scrotal construction and reconstruction.
      The graft take is usually not satisfactory as the scrotal defect, may be contaminated with bacteria,
      • Young W.A.
      • Wright J.K.
      Scrotal reconstruction with a rectus abdominis muscle flap.
      and the testes may be devoid of the graftable tunica vaginalis.
      • Tiwari I.N.
      • Seth H.P.
      • Mehdiratta K.S.
      Reconstruction of the scrotum by thigh flaps.
      Furthermore, the results are less acceptable cosmetically and leave the patient aware of the lack of protection and increased vulnerability.
      • Datubo-Brown D.D.
      Alternative techniques for scrotal reconstruction.
      Transposition of the testicles and spermatic cords to a permanent subcutaneous pocket in the upper thigh has been used, but concerns over temperature regulation and future function of the testicles, psychological adverse effects and reports of testicular pain and atrophy made this technique unpopular.
      • Datubo-Brown D.D.
      Alternative techniques for scrotal reconstruction.
      • Milard Jr., D.R.
      Scrotal construction and reconstruction.
      • Tiwari I.N.
      • Seth H.P.
      • Mehdiratta K.S.
      Reconstruction of the scrotum by thigh flaps.
      • Yu P.
      • Sanger J.R.
      • Matloub H.S.
      • Gosain A.
      • Larson D.
      Anterolateral thigh fasciocutaneous island flaps in perineoscrotal reconstruction.
      Numerous thigh cutaneous or fasciocutaneous flaps have been designed for primary or secondary scrotal repair when the testicles have already been temporarily buried under thigh skin.
      • McDougal W.S.
      Scrotal reconstruction using thigh pedicle flaps.
      • Hallock G.G.
      Scrotal reconstruction following Fournier's gangrene using the medial thigh fasciocutaneous flap.
      • d'Alessio E.
      • Rossi F.
      • d'Alessio R.
      Reconstruction in traumatic avulsion of penile and scrotal skin.
      • Chadha A.
      • Saraiya H.
      Scrotal reconstruction using Foley catheters as tissue expanders.
      • Robinson D.W.
      • Stephenson K.L.
      • Padgett E.C.
      Loss of coverage of the penis, scrotum and urethra.
      • Milard Jr., D.R.
      Scrotal construction and reconstruction.
      • Reid C.F.
      • Wright Jr., J.H.
      Scrotal reconstruction following an avulsion injury.
      • McAninch J.W.
      • Khan R.I.
      • Jeffrey R.B.
      • Laing F.C.
      • Krieger M.J.
      Major traumatic and septic genital injuries.
      • Gonzalez-Ulloa M.
      Sever avulsion of the scrotum in a bullfighter: reconstruction procedure.
      • Tiwari I.N.
      • Seth H.P.
      • Mehdiratta K.S.
      Reconstruction of the scrotum by thigh flaps.
      • Hirshowitz B.
      • Peretz B.A.
      Bilateral superomedial thigh flap for primary reconstruction of scrotum and vulva.
      Although these flaps represent an excellent tool for scrotal reconstruction, they have limitations. The thigh and perineal skin may be involved in the infection process to varying degrees that do not allow early reconstruction
      • Yu P.
      • Sanger J.R.
      • Matloub H.S.
      • Gosain A.
      • Larson D.
      Anterolateral thigh fasciocutaneous island flaps in perineoscrotal reconstruction.
      and local damage may interrupt the normal blood supply, compromising flap survival.
      • Di Geronimo E.M.
      Scrotal reconstruction utilizing a unilateral adductor minimus myocutaneous flap.
      Some of these skin flaps require several surgical procedures and delays which mean longer hospital stay and more surgical trauma for the patient. The superomedial thigh fasciocutaneous flap is limited in its transverse dimension so that bilateral flaps are required to reconstruct the whole scrotum which results in scarring of both thighs. The medial thigh fasciocutaneous flap is usually associated with a rotation dog-ear which requires a later revision, and if an additional scrotal cover is needed a gracilis muscle flap is used to provide this cover. The anterolateral thigh flap is difficult in dissection with vascular anatomical variability and the excess subcutaneous fat in white patients makes it somewhat bulky.
      • Yu P.
      • Sanger J.R.
      • Matloub H.S.
      • Gosain A.
      • Larson D.
      Anterolateral thigh fasciocutaneous island flaps in perineoscrotal reconstruction.
      The rectus abdominis muscle flap
      • Young W.A.
      • Wright J.K.
      Scrotal reconstruction with a rectus abdominis muscle flap.
      and the gracilis muscle or myocutaneous flap
      • Banks D.W.
      • O'Brien D.P.
      • Amerson J.R.
      • Hester T.R.
      Gracilis musculocutaneous flap scrotal reconstruction after Fournier gangrene.
      • Westfall C.T.
      • Keller H.B.
      Scrotal reconstruction utilizing bilateral gracilis myocutaneous flaps.
      provide the best reconstructive option for major scrotal defects following Fournier's gangrene.
      • Calderon W.
      • Chang N.
      • Mathes S.J.
      Comparison of the effect of bacterial inoculation in musculocutaneous and fasciocutaneous flaps.
      The rectus abdominis muscle flap is a large and well-vascularised flap, with an extensive arc of rotation and acceptable donor site morbidity; and the gracilis muscle is an expendable muscle, being an accessory adductor of the thigh.
      • Bostwick III, J.
      • Hill H.L.
      • Nahai F.
      Repairs in the lower abdomen, groin, or perineum with myocutaneous or omental flaps.
      They are broad sheet like muscles that can be wrapped easily around the acute curves of the exposed testes and do not add much bulk to the reconstructed scrotum.
      Being muscle flaps, both have the ability to survive in an infected milieu and represent a useful choice for reconstruction in the contaminated perineum, especially in diabetic and toxic patients.
      The choice of which muscle to use depends on the patient's general condition, type of work, habits and hobbies. They are one-stage, simple and reliable procedures, which provide excellent cover for the exposed testes and give satisfactory protection and aesthetic outcome. We recommend their use for primary reconstruction of major scrotal defects following Fournier's gangrene.

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        Scrotal reconstruction using thigh pedicle flaps.
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        Scrotal reconstruction after Fournier's gangrene.
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        Scrotal reconstruction following Fournier's gangrene using the medial thigh fasciocutaneous flap.
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        Alternative techniques for scrotal reconstruction.
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        Reconstruction in traumatic avulsion of penile and scrotal skin.
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        • Saraiya H.
        Scrotal reconstruction using Foley catheters as tissue expanders.
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        Sever avulsion of the scrotum in a bullfighter: reconstruction procedure.
        Br J Plast Surg. 1963; 16: 154-159
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        Reconstruction of the scrotum by thigh flaps.
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        Bilateral superomedial thigh flap for primary reconstruction of scrotum and vulva.
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        • Keller H.B.
        Scrotal reconstruction utilizing bilateral gracilis myocutaneous flaps.
        Plast Reconstr Surg. 1981; 68: 945-947
        • Yu P.
        • Sanger J.R.
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        Anterolateral thigh fasciocutaneous island flaps in perineoscrotal reconstruction.
        Plast Reconstr Surg. 2002; 109: 610-616
        • Di Geronimo E.M.
        Scrotal reconstruction utilizing a unilateral adductor minimus myocutaneous flap.
        Plast Reconstr Surg. 1982; 70: 749-751
        • Calderon W.
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