Hydatic Cyst Infection of the Tibia Mimicking Chondrosarcoma on ¹⁸F-FDG PET/CT Scan

Area of Science:

• Medical Imaging
• Parasitology
• Orthopedic Surgery

Background:

• Hydatid cyst disease, caused by Echinococcus granulosus, typically affects the liver and lungs.
• Osseous involvement is rare due to bone's rigid structure hindering cyst adventitia formation.
• 18F-FDG PET/CT findings for hepatic and pulmonary hydatid cysts are documented, but not for bone involvement in extremities.

Purpose of the Study:

• To report the first case of extremity bone hydatid disease evaluated with 18F-FDG PET/CT.
• To highlight the utility of 18F-FDG PET/CT in diagnosing osseous echinococcosis.

Main Methods:

• Case report of a patient with extremity bone hydatid disease.
• Diagnostic imaging using 18F-FDG PET/CT.

Main Results:

• The study presents the initial evaluation of extremity bone hydatid disease using 18F-FDG PET/CT.
• This case establishes a precedent for utilizing 18F-FDG PET/CT in diagnosing bone hydatid cysts in peripheral locations.

Conclusions:

• 18F-FDG PET/CT can effectively evaluate bone hydatid disease in extremities.
• This imaging modality provides crucial diagnostic information for rare osseous echinococcosis cases.