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Updated: Aug 22, 2026

Echocardiographic Evaluation of Atrial Communications before Transcatheter Closure
Published on: February 8, 2022
The case of a cyst hydatid localized within the interatrial septum
Ozalp Karabay1, Ahmet Onen, Fidan Yildiz
1Department of Cardiovascular Surgery, Dokuz Eylul University Hospital, Izmir, Turkey.
Insights
This case report details a rare instance of Echinococcus granulosus affecting the heart's interatrial septum in a young adult. Surgical removal and medical therapy successfully treated the hydatid cyst without complications.
Area of Science:
- Cardiology
- Parasitology
- Neurosurgery
Background:
- Cardiac echinococcosis, caused by Echinococcus granulosus, is rare, with interatrial septum involvement being exceptionally uncommon.
- Echinococcus granulosus is a parasitic tapeworm that can form hydatid cysts in various organs, including the heart.
Observation:
- A 19-year-old male presented with neurological symptoms, leading to the discovery of a frontal lobe cyst.
- Postoperatively, echocardiography revealed a significant hydatid cyst (5x4 cm) within the interatrial septum.
Findings:
- Surgical enucleation of the interatrial septal hydatid cyst was performed successfully.
- The cyst wall was meticulously sutured to the interatrial septum, with no postoperative complications reported.
Implications:
- This case highlights the importance of considering parasitic infections in neurological presentations, even when cardiac involvement is not initially suspected.
- Successful surgical and medical management (albendazole) of interatrial septal hydatid cysts is feasible, offering a positive prognosis.
Abstract:
The ratio of cardiac involvement of Echinoccocus granulosus is 0.02-2% and although seen rarely, involvement of the interatrial septum has also been reported in the published literature. The present case was a 19-year-old male university student admitted to hospital with complaints of headache and dizziness. Computerized tomography of the cranium revealed a cystic mass located at the frontal region and enucleation of the cyst was performed during surgery. A cystic lesion 5 x 4 cm in size was detected within the interatrial septum on two-dimensional transthoracic echocardiography during the postoperative period and the patient was referred to our clinic. Open heart surgery was performed and a hydatid cyst that involved the interatrial septum was enucleated. The cyst wall was sutured to the interatrial septum. No complications developed during the postoperative period. The patient was discharged on the fifth day of hospitalization and medical therapy was started with albendazole.
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