[Bone echinococcosis. Apropos of a case of hydatid cyst of the spine].

The authors report a case of hydatid cyst of the vertebral column (L2-L3) simulating an acute abdominal syndrome with pain in the right iliac fossa. On exploration of the abdominal cavity, they detected the presence of a fluctuating retroperitoneal collection of fluid due to the migration of a hydatid abscess into the sheath of the right psoas muscle. Three surgical operations of curetage followed by wide drainage were carried out with simple operative sequelae.