Acute abdomen caused by primary torsion of the omentum in hydatid disease.

Hydatid disease is a considerable social health problem because of its endemic distribution in many countries. Although hydatid disease is usually seen in the liver or lung, it may present anywhere in the body. Here, we present a patient with a primary torsion of a hydatid cyst attached to the greater omentum with a peduncle that caused acute abdomen. This is the first report of a primary torsion of the omentum in hydatid disease. Clinicians are urged to be cognizant of the different and rare locations of hydatid disease, especially in endemic countries.