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Primary musculoskeletal hydatid disease - a case report
M Mercouris1, F Gool1, M Kariem1
1Department of General Surgery Mitchells Plain District Hospital, South Africa.
Summary
A rare case of hydatid disease presented as a large back mass in an HIV-positive patient. Early diagnosis and treatment with antiparasitic medication and surgery are crucial for managing this atypical presentation.
Area of Science:
- Medical Case Reports
- Parasitology
- Infectious Diseases
Background:
- Hydatid disease, caused by Echinococcus granulosus, typically affects the liver and lungs.
- Atypical presentations of hydatid disease, particularly in the thoracoabdominal wall, are less common but important to recognize.
Purpose of the Study:
- To report a unique case of hydatid disease presenting as a large posterior thoracoabdominal mass.
- To emphasize the importance of considering hydatid disease in the differential diagnosis of cystic masses, especially in endemic regions.
Main Methods:
- A case report of a 33-year-old male with Human Immunodeficiency Virus (HIV) on antiretroviral therapy.
- Diagnostic imaging included contrast-enhanced Computed Tomography (CT) of the thoracoabdominal region.
- Laboratory investigations included positive hydatid serology.
Main Results:
- A large, multiseptated cystic mass was identified in the posterior thoracoabdominal wall.
- The patient was successfully managed with antiparasitic treatment followed by surgical excision.
Conclusions:
- This case highlights an unusual extrahepatic and extrapulmonary manifestation of hydatid disease.
- Early detection and prompt management are vital for favorable outcomes in hydatid disease, even with atypical presentations.

