Calyceal Plication with Anderson-Hynes Pyeloplasty in a 7-Year-Old Boy with Giant Hydronephrosis of a Single Right Kidney

Introduction

Giant hydronephrosis is rare and is diagnosed when the volume of the collecting system exceeds 2–4 % of body weight [10]. The most common cause is ureteropelvic junction obstruction (UPJO). Nephrectomy is considered if the function of the affected kidney is less than 10 %, and the other kidney is normal [8]. The gold standard for repair is the Anderson-Hynes pyeloplasty [1]. However, the results of this technique alone are not always optimal for giant hydronephrosis, often making it difficult to salvage the affected kidney over the long term. Therefore the standard technique was modified by performing plication of the renal calyces as an adjunct to dismembered pyeloplasty [13]. This is the first case of giant hydronephrosis of a single kidney in a child treated by Anderson-Hynes pyeloplasty modified with calyceal plication.

References

• 1 Anderson J C, Hynes W. Retrocaval ureter. A case diagnosed preoperatively and treated successfully by a plastic operation.  Br J Urol. 1949;  21 209-214
• 2 Blachar A, Blachar Y, Livne P M. et al . Clinical outcome and follow-up of prenatal hydronephrosis.  Pediatr Nephrol. 1994;  8 30-35
• 3 Hendren W H, Radhakrishnan J, Middleton A W. Pediatric pyeloplasty.  J Pediatr Surg. 1980;  15 133-144
• 4 Johnston J H, Evans J P, Glasberg K I. et al . Pelvic hydronephrosis in children: a review of 219 personal cases.  J Urol. 1977;  117 97-101
• 5 Kato Y, Yamataka A, Okazaki T. et al . Surgical treatment and outcome of mega-hydronephrosis due to pelviureteric junction stenosis.  Pediatr Surg Int. 2006;  22 911-913
• 6 Kenney K, Hendren W H, Pfister R C. Giant hydronephrosis in children.  J Pediatr Surg. 1979;  14 844-850
• 7 Owen R J, Lamont A C, Brookes J. Early management and postnatal investigation of prenatally diagnosed hydronephrosis.  Clin Radiol. 1996;  51 173-176
• 8 Rickwood A MK. The genito-urinary tract. Lister J, ed. Complications of pediatric surgery. London; Baillere-Tindal 1986
• 9 Sheu J C, Koh C C, Chang P Y. et al . Ureteropelvic junction obstruction in children: 10 years' experience in one institution.  Pediatr Surg Int. 2006;  22 519-523
• 10 Sorrentino M. Treatment of giant hydronephrosis.  Br J Urol. 1966;  38 255-261
• 11 Uson A C, Levitt S B, Lattimer J K. Giant hydronephrosis in children.  Pediatrics. 1969;  44 209-216
• 12 Yang W, Shen S, Wu C. Hydronephrosis and giant hydronephrosis.  Chin Med J. 1958;  77 257-259
• 13 Zupancic B, Popovic L, Mikulic D. et al . Calyceal plication with pyeloplasty in the treatment of giant hydronephrosis in children.  Eur J Pediatr Surg. 2006;  16 176-181