Comparison of percutaneous extraperitoneal closure (LPEC) and open repair for pediatric inguinal hernia: experience of a single institution with over 1000 cases

Hiromu Miyake, Koji Fukumoto, Masaya Yamoto, Hiroshi Nouso, Masakatsu Kaneshiro, Hideaki Nakajima, Mariko Koyama, Naoto Urushihara

Research output: Contribution to journalArticle

14 Citations (Scopus)

Abstract

Background: Recently, laparoscopic percutaneous extraperitoneal closure (LPEC) for pediatric inguinal hernia has become more popular. The aim of this study was to compare LPEC with open repair (OR) performed in one institution. Methods: In total, 1050 patients underwent OR from July 2003 to June 2008, and 1017 patients underwent LPEC from July 2008 to June 2013. The mean follow-up period was 100 months in OR and 40 months in LPEC (p < 0.01). Given the difference in the follow-up periods, the log-rank test was used for the analysis of the long-term results. The mean age at operation in OR and LPEC was 3.72 and 3.75 years, respectively (p = 0.81). The mean body weight was 14.73 and 14.72 kg, respectively (p = 0.98). The male/female ratio was 617/433 and 561/456, respectively (p = 0.10). In the LPEC procedure, the asymptomatic contralateral internal ring was routinely observed, and when a patent processus vaginalis (PPV) was confirmed, prophylactic surgery was performed. Results: The mean operative time for unilateral surgery in OR and LPEC was 28.5 and 21.2 min, respectively (p < 0.01). The mean operative time for bilateral surgery was 52.3 and 25.4 min, respectively (p < 0.01). Recurrence was confirmed in 0.52 % in OR and in 0.27 % in LPEC (p = 0.53). In the LPEC group, 41.7 % of patients with clinically unilateral inguinal hernia were confirmed to have a contralateral PPV and underwent prophylactic LPEC. Contralateral metachronous inguinal hernia (CMIH) was seen in 6.48 % in OR and in 0.33 % in LPEC (p < 0.01). Two patients showed postoperative testicular atrophy, and two had iatrogenic postoperative cryptorchism after OR, while no postoperative testicular complications were seen after LPEC. Conclusion: Both OR and LPEC obtained satisfactory results from the perspective of recurrence rate and complications. Prophylactic contralateral LPEC is useful for preventing CMIH without prolonging operative time compared with OR. The midterm safety and efficacy of LPEC are proven.

Original languageEnglish
Pages (from-to)1466-1472
Number of pages7
JournalSurgical Endoscopy
Volume30
Issue number4
DOIs
Publication statusPublished - Apr 1 2016
Externally publishedYes

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Inguinal Hernia
Operative Time
Pediatrics
Recurrence
Cryptorchidism
Atrophy
Body Weight
Safety

Keywords

  • Contralateral metachronous inguinal hernia
  • Laparoscopic inguinal hernia repair
  • Laparoscopic percutaneous extraperitoneal closure
  • Open herniorrhaphy
  • Pediatric inguinal hernia

ASJC Scopus subject areas

  • Surgery

Cite this

Comparison of percutaneous extraperitoneal closure (LPEC) and open repair for pediatric inguinal hernia : experience of a single institution with over 1000 cases. / Miyake, Hiromu; Fukumoto, Koji; Yamoto, Masaya; Nouso, Hiroshi; Kaneshiro, Masakatsu; Nakajima, Hideaki; Koyama, Mariko; Urushihara, Naoto.

In: Surgical Endoscopy, Vol. 30, No. 4, 01.04.2016, p. 1466-1472.

Research output: Contribution to journalArticle

Miyake, Hiromu ; Fukumoto, Koji ; Yamoto, Masaya ; Nouso, Hiroshi ; Kaneshiro, Masakatsu ; Nakajima, Hideaki ; Koyama, Mariko ; Urushihara, Naoto. / Comparison of percutaneous extraperitoneal closure (LPEC) and open repair for pediatric inguinal hernia : experience of a single institution with over 1000 cases. In: Surgical Endoscopy. 2016 ; Vol. 30, No. 4. pp. 1466-1472.
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abstract = "Background: Recently, laparoscopic percutaneous extraperitoneal closure (LPEC) for pediatric inguinal hernia has become more popular. The aim of this study was to compare LPEC with open repair (OR) performed in one institution. Methods: In total, 1050 patients underwent OR from July 2003 to June 2008, and 1017 patients underwent LPEC from July 2008 to June 2013. The mean follow-up period was 100 months in OR and 40 months in LPEC (p < 0.01). Given the difference in the follow-up periods, the log-rank test was used for the analysis of the long-term results. The mean age at operation in OR and LPEC was 3.72 and 3.75 years, respectively (p = 0.81). The mean body weight was 14.73 and 14.72 kg, respectively (p = 0.98). The male/female ratio was 617/433 and 561/456, respectively (p = 0.10). In the LPEC procedure, the asymptomatic contralateral internal ring was routinely observed, and when a patent processus vaginalis (PPV) was confirmed, prophylactic surgery was performed. Results: The mean operative time for unilateral surgery in OR and LPEC was 28.5 and 21.2 min, respectively (p < 0.01). The mean operative time for bilateral surgery was 52.3 and 25.4 min, respectively (p < 0.01). Recurrence was confirmed in 0.52 {\%} in OR and in 0.27 {\%} in LPEC (p = 0.53). In the LPEC group, 41.7 {\%} of patients with clinically unilateral inguinal hernia were confirmed to have a contralateral PPV and underwent prophylactic LPEC. Contralateral metachronous inguinal hernia (CMIH) was seen in 6.48 {\%} in OR and in 0.33 {\%} in LPEC (p < 0.01). Two patients showed postoperative testicular atrophy, and two had iatrogenic postoperative cryptorchism after OR, while no postoperative testicular complications were seen after LPEC. Conclusion: Both OR and LPEC obtained satisfactory results from the perspective of recurrence rate and complications. Prophylactic contralateral LPEC is useful for preventing CMIH without prolonging operative time compared with OR. The midterm safety and efficacy of LPEC are proven.",
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T2 - experience of a single institution with over 1000 cases

AU - Miyake, Hiromu

AU - Fukumoto, Koji

AU - Yamoto, Masaya

AU - Nouso, Hiroshi

AU - Kaneshiro, Masakatsu

AU - Nakajima, Hideaki

AU - Koyama, Mariko

AU - Urushihara, Naoto

PY - 2016/4/1

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N2 - Background: Recently, laparoscopic percutaneous extraperitoneal closure (LPEC) for pediatric inguinal hernia has become more popular. The aim of this study was to compare LPEC with open repair (OR) performed in one institution. Methods: In total, 1050 patients underwent OR from July 2003 to June 2008, and 1017 patients underwent LPEC from July 2008 to June 2013. The mean follow-up period was 100 months in OR and 40 months in LPEC (p < 0.01). Given the difference in the follow-up periods, the log-rank test was used for the analysis of the long-term results. The mean age at operation in OR and LPEC was 3.72 and 3.75 years, respectively (p = 0.81). The mean body weight was 14.73 and 14.72 kg, respectively (p = 0.98). The male/female ratio was 617/433 and 561/456, respectively (p = 0.10). In the LPEC procedure, the asymptomatic contralateral internal ring was routinely observed, and when a patent processus vaginalis (PPV) was confirmed, prophylactic surgery was performed. Results: The mean operative time for unilateral surgery in OR and LPEC was 28.5 and 21.2 min, respectively (p < 0.01). The mean operative time for bilateral surgery was 52.3 and 25.4 min, respectively (p < 0.01). Recurrence was confirmed in 0.52 % in OR and in 0.27 % in LPEC (p = 0.53). In the LPEC group, 41.7 % of patients with clinically unilateral inguinal hernia were confirmed to have a contralateral PPV and underwent prophylactic LPEC. Contralateral metachronous inguinal hernia (CMIH) was seen in 6.48 % in OR and in 0.33 % in LPEC (p < 0.01). Two patients showed postoperative testicular atrophy, and two had iatrogenic postoperative cryptorchism after OR, while no postoperative testicular complications were seen after LPEC. Conclusion: Both OR and LPEC obtained satisfactory results from the perspective of recurrence rate and complications. Prophylactic contralateral LPEC is useful for preventing CMIH without prolonging operative time compared with OR. The midterm safety and efficacy of LPEC are proven.

AB - Background: Recently, laparoscopic percutaneous extraperitoneal closure (LPEC) for pediatric inguinal hernia has become more popular. The aim of this study was to compare LPEC with open repair (OR) performed in one institution. Methods: In total, 1050 patients underwent OR from July 2003 to June 2008, and 1017 patients underwent LPEC from July 2008 to June 2013. The mean follow-up period was 100 months in OR and 40 months in LPEC (p < 0.01). Given the difference in the follow-up periods, the log-rank test was used for the analysis of the long-term results. The mean age at operation in OR and LPEC was 3.72 and 3.75 years, respectively (p = 0.81). The mean body weight was 14.73 and 14.72 kg, respectively (p = 0.98). The male/female ratio was 617/433 and 561/456, respectively (p = 0.10). In the LPEC procedure, the asymptomatic contralateral internal ring was routinely observed, and when a patent processus vaginalis (PPV) was confirmed, prophylactic surgery was performed. Results: The mean operative time for unilateral surgery in OR and LPEC was 28.5 and 21.2 min, respectively (p < 0.01). The mean operative time for bilateral surgery was 52.3 and 25.4 min, respectively (p < 0.01). Recurrence was confirmed in 0.52 % in OR and in 0.27 % in LPEC (p = 0.53). In the LPEC group, 41.7 % of patients with clinically unilateral inguinal hernia were confirmed to have a contralateral PPV and underwent prophylactic LPEC. Contralateral metachronous inguinal hernia (CMIH) was seen in 6.48 % in OR and in 0.33 % in LPEC (p < 0.01). Two patients showed postoperative testicular atrophy, and two had iatrogenic postoperative cryptorchism after OR, while no postoperative testicular complications were seen after LPEC. Conclusion: Both OR and LPEC obtained satisfactory results from the perspective of recurrence rate and complications. Prophylactic contralateral LPEC is useful for preventing CMIH without prolonging operative time compared with OR. The midterm safety and efficacy of LPEC are proven.

KW - Contralateral metachronous inguinal hernia

KW - Laparoscopic inguinal hernia repair

KW - Laparoscopic percutaneous extraperitoneal closure

KW - Open herniorrhaphy

KW - Pediatric inguinal hernia

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