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Giant Hydatid Cyst Originating From Psoas Muscle Extending to the Iliac Bone: A Case Report

Summary

A 50-year-old man from southwestern Iran developed a large parasitic cyst in his psoas muscle caused by tapeworm infection. After imaging confirmed the diagnosis, doctors removed the cyst surgically and treated him with antiparasitic medication. The patient recovered well with no complications during the following year.

Background

Hydatid cysts are parasitic infections caused by Echinococcus granulosus that predominantly affect the liver and lungs. Muscular involvement is rare, particularly in the psoas muscle, occurring in only 0.7-0.9% of cases even in endemic regions.

Objective

This case report presents a patient with a giant muscular hydatid cyst originating from the psoas muscle extending to the iliac bone, describes its management, and emphasizes the need for awareness and prompt intervention in rare presentations.

Results

A large hydatid cyst measuring 40×50×110 mm containing daughter cysts was found in the psoas muscle on the iliac bone. Postoperative recovery was uneventful, and the patient received standard albendazole therapy with no complications observed during one-year follow-up.

Conclusion

Complete surgical removal combined with postoperative albendazole therapy is the most effective treatment for symptomatic muscular hydatid cysts. Awareness among healthcare providers is crucial for timely diagnosis and management to prevent complications such as rupture and anaphylaxis.
  • Published in:Clinical Case Reports,
  • Study Type:Case Report,
  • Source: PMID: 39839951, DOI: 10.1002/ccr3.70124
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