Bilateral groin hernia (BGH) in adults has a prevalence of 17-35% that increases with age. In people older than 50 years, synchronic groin hernias prevalence can be as high as 35% or become a metachronic hernia up to 60% as age advances. TAPP (transabdominal preperitoneal) and TEP (totally extraperitoneal)are elective techniques for BGH repair, however, TAPP makes it easier to carry out other concomitant intra-abdominal surgeries, and allows the identification of unnoticed synchronic

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... al hernias. After TAPP or TEP, patients often have the sensation of a groin lump or swelling in the groin area. Therefore, in the present research, resection of all hernial lipomas was proposed, as well as a punctual follow-up during the subsequent 18 months in order to elucidate whether this was one of the causes. Material and methods: Observational, prospective and descriptive case series study, from January 2009 to March 2020; 100 adults with BGH underwent TAPP, operated on by the same surgeon and his team. The technique is succinctly described and different variables are reported. Results: Average age, 48.1 years; weight, 73.9 kg; comorbidities, 59 patients; operating time, 118 minutes; bleeding 5-150 mL; hospital stay, 1.6 days; minor complications, 35; sensation of groin lump, 19. TAPP has become the technique of choice in repairing BGH due to its multiple advantages ratified in the literature. The synchronic contralateral groin hernia can be found in up to 52% of cases. Conclusions: It is relevant to inquire about synchronic contralateral groin hernia. TAPP is the gold standard in BGH repair, including the cases needing concomitant intra-abdominal surgeries. All hernial lipomas must be resected when operating on groin hernias.