Primary paraspinal hydatid cyst: a rare presentation of Echinococcosis.

Hydatid disease is endemic in most cattle rearing areas, particularly Australia, New Zealand, Mediterranean countries, India, Africa and South America.1,2 It is often manifested by a slowly growing cystic mass, with hepatic and pulmonary involvement being most common.3 Unusual sites of involvement frequently cause diagnostic problems and hence delay in diagnosis and many serious complications. Primary skeletal muscle involvement is very rare.4,5 We present a case of hydatid disease of lumbar paraspinal muscles in a middle aged female, who presented to the General Surgery clinic at our Institute.