Introduction: The lumbar hernia is a hernia rarely encountered in teenager patients. There is an increased incidence of traumatic aetiology of Lumbar hernia related to new diagnostic methods. Lumbar hernia have been frequently misdiagnosed as other surgical entities. It is presented a case of superior primary acquired Lumbar hernia in a teenager patient with no previous history of diseases.

Case description: a 14-year-old african-american male patient who complained of an occasionally painful swelling over the left side of the lumbar region, was clinically diagnosed with a Grynfelt-Lesshaft hernia and confirmed by CT scan. The patient was surgically intervened with a transverse lumpectomy incision over the tumour. The contents were reduced, and the 1cm x 1cm ring with no sac was closed and reinforced with polyester fibre prosthetic mesh. No immediate complications were observed and the patient was released of the institution five days after the procedure.

Conclusions: The Grynfelt-Lesshaft hernia is an uncommon surgical condition related to a congenital or acquired aetiology. The advances in diagnostic methods available allow to easily identify a Grynfelt-Lesshaft hernia in younger patients.