[Round ligament cyst simulating incarcerated inguinal hernia. Report of a case].

Background: Round ligament cysts are rare lesions, often diagnosed as irreducible inguinal hernias. Most patients are in the third to fourth decade of life, but they can occur in younger patients. They are usually clinically asymptomatic or tend to produce subtle symptoms such as pain, discomfort, or a feeling of heaviness, and swelling.