Abstract
Hydatid disease is a parasitic infestation of humans and herbivorous animals, caused by Echinococcu granulosus. Dogs and some wild carnivores, like foxes, are definitive hosts, harboring worms in their intestines. Musculoskeletal cysts account for 0.7-3% of total cases of hydatidosis. Primarymuscular hydatidosis without involving the thoracic or abdominal organs is extremely rare. Intramuscular infestation may mimic a soft tissue tumor leading to inappropriate cyst rupture with the attendant risks of anaphylaxis and dissemination to other organs. So preoperative evaluation is critical to avoid lifethreatening complications. We report a case of 34-year-old male patient with a cystic gluteal swelling turning out to be hydatid cyst on surgical exploration. Surgical excision with a pharmacology complementary treatment with antihelementhics is necessary to achieve the complete healing.