Background: In addition to its well-known benefits of decreased postoperati
ve pain and shorter recovery time, laparoscopic hernia repair has the major
advantage of allowing the surgeon to explore the side contralateral to the
clinically diagnosed hernia. The purpose of this study was to evaluate the
incidence of incipient unsuspected contralateral hernia during totally ext
raperitoneal (TEP) laparoscopic inguinal herniorrhaphy and to analyze the r
isks and benefits of identifying these hernias at the time of the initial s
urgery.
Methods: We did a retrospective review of the charts of all of the 724 male
patients who underwent laparoscopic TEP repair of 958 groin hernias betwee
n September 1991 and September 1999. The initial clinical impression of the
existence of unilateral or bilateral hernias was noted and compared to our
operative findings. The same surgeon per formed all the repairs. Explorati
on of the contralateral side was performed in a systematic fashion. A secon
d mesh prosthesis was placed if a contralateral hernia was found.
Results: Bilateral hernia repair was performed on 234 patients (32.3%). In
62 of them (11.2%), the contralateral hernia was diagnosed only at the time
of the procedure. Operative time ranged from 14 to 185 min (median, 38.6).
The operative time for the contralateral exploration ranged from 2 to 5 mi
n (median, 2.8). The rate of complications was 4.1%, but no complications w
ere directly related to the exploration of the asymptomatic side.
Conclusion: Our study shows that a large number of inguinal hernias are und
iagnosed by physical examination (11.2%). Systematic contralateral explorat
ion using the TEP approach is safe and does not greatly increase the operat
ive time. Early identification and repair of a contralateral hernia obviate
s the need for reoperation, reduces overall costs to the health care system
, and eliminates any further work loss for the patient.