[Spigelian hernia. Clinical and anatomo-surgical considerations]

The authors describe a case of Spigelian hernia observed and treated. This hernia is uncommon, although the true incidence is probably greater than the small number of patients reported in literature. The signs and symptoms of the hernia are not always characteristic and then a correct diagnosis can be difficult. Sometime instrumental examination is essential for diagnosis, when clinical examination is not clear. Surgical repair as mandatory for a correct reconstruction of the abdominal wall and a prevention of recurrences.