title: Efficacy of single-incision laparoscopic appendectomy in adults and adolescents using an endolinear stapler.
abstract: BACKGROUND
  Some investigators recently introduced transumbilical single-incisional laparoscopic appendectomy (SILA), however, those SILA require expensive surgical instruments, or difficult technique. We uniquely propose performing SILA using with endolinear stapler, and compare the clinical results of the present SILA with those of conventional laparoscopic appendectomy.
  
  
  METHODS
  In brief, the skin of the umbilical hollow is cut, the anterior layer of the rectus sheath and subcutaneous fat is exfoliated widely, and the linea alba is opened. Two low-profile 5-mm-diameter trocars are stabbed through the right rectus sheath, and a 12-mm-diameter trocar is inserted from the opened linea alba. Using a 5-mm laparoscope, and endolinear stapler, the appendix is dissected. Some clinical and operative data of 16 cases treated the present SILA are compared with those of 35 cases treated conventional laparoscopic appendectomy.
  
  
  RESULTS
  We performed the present SILA for 16 patients consisted of young women mostly, compared with cases treated conventional laparoscopic appendectomy (mean, 26-year-old vs 51-year-old, p < 0.0001). The results of the SILA we have proposed in adults and adolescents are good in terms of operation time (mean, 64 minutes vs 89.3 minutes, p = 0.049), duration of hospitalization (mean, 4.2 days vs 8.1 days, p = 0.0038), and low frequency of intra- and postoperative complications (one patient of postoperative umbilical granuloma).
  
  
  CONCLUSIONS
  We assume that convenience of surgical procedure of the present SILA would affect the shortness of operation time, and that minimal invasive surgical stress of the present SILA would reduce perioperative stress of appendicitis, and ameliorate adolescents with appendicitis earlier. We believe that the SILA we have proposed offers advantages in diversion of conventional surgical instruments, similarity to conventional manipulation of laparoscopic forceps, usage of an endoscopic stapler able to cut cecum in cases of advanced appendicitis extending to the cecum, and obviation of extra-abdominal appendectomy demanding excessive traction of the appendix.
authors.forename: Takatsugu
authors.initials: T
authors.lastname: Yamamoto
authors.forename: Yukiko
authors.initials: Y
authors.lastname: Kurashima
authors.forename: Kazunori
authors.initials: K
authors.lastname: Ohata
authors.forename: Masato
authors.initials: M
authors.lastname: Okawa
authors.forename: Shogo
authors.initials: S
authors.lastname: Tanaka
authors.forename: Takahiro
authors.initials: T
authors.lastname: Uenishi
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001062:Appendectomy / Q000009:adverse effects / Q000379:methods*; D001064:Appendicitis / Q000175:diagnosis / Q000601:surgery*; D002648:Child; D004867:Equipment Design; D005260:Female; D006801:Humans; D010535:Laparoscopy / Q000009:adverse effects; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D061646:Operative Time; D011183:Postoperative Complications / Q000209:etiology; D012189:Retrospective Studies; D013528:Surgical Staplers; D017792:Surgical Stapling / Q000009:adverse effects / Q000295:instrumentation*; D013997:Time Factors; D016896:Treatment Outcome; D055815:Young Adult