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CT diagnosis of primary mediastinal hydatid cyst rupture into the aorta: a case report
L Marti-Bonmati1, R Touza, H Montes
1Servicio de Radiodiagnostico, Hospital LA FE, Valencia, Spain.
Cardiovascular and Interventional Radiology
|October 1, 1988
Insights
Primary mediastinal hydatid cysts are rare. This case highlights a ruptured cyst causing bilateral popliteal embolism, with CT scans showing a key sign of aortic communication.
Area of Science:
- Medicine
- Radiology
- Parasitology
Background:
- Primary hydatid cysts typically occur in the liver or lungs.
- Mediastinal hydatid cysts are exceptionally rare, posing diagnostic challenges.
Observation:
- A patient presented with a primary mediastinal hydatid cyst.
- The cyst ruptured into the aorta, leading to bilateral popliteal artery embolism.
Findings:
- Contrast-enhanced computed tomography (CT) revealed pathognomonic signs of a communicating rupture between the echinococcal cyst and the aorta.
- Imaging findings were compared with ultrasonography and aortography.
Implications:
- This case underscores the importance of considering rare diagnoses like mediastinal hydatid cysts.
- CT imaging is crucial for identifying communicating ruptures into the aorta.
- Prompt diagnosis and management are vital to prevent embolic complications.
Abstract:
Primary hydatid cyst of the mediastinum is rare. We report a patient with a primary mediastinal hydatid cyst which ruptured into the aorta, resulting in bilateral popliteal embolism. The contrast-enhanced computed tomographic features represent a pathognomonic sign of a communicating rupture of an echinococcal cyst into the aorta. Comparison is made with ultrasonography and aortography.