A rare case of a groin hernia: the Hesselbach's hernia.

A 61-year-old woman presented with pain in the left groin. The pain radiated from the groin to the knee. At physical examination, a non-reducible swelling was found lateral to the femoral vessels. A CT-scan showed herniation of fatty tissue through the lacuna musculorum. A laparoscopic repair was carried out. A large adipose structure was found herniating through the lacuna musculorum and originating from the Bogros area. It ran along the iliopsoas muscle, suppressing the femoral cutaneous nerve. The tissue was reduced and excised, and a polypropylene mesh was placed to cover the defect. Inguinal hernias are categorized as medial, lateral or femoral hernias. We describe a case in which a hernia through the lacuna musculorum was found, which is very rare and referred to as a Hesselbach's hernia.