Introduction to Cardiac Echinococcosis

A 42-year-old man from an endemic region recently presented with sudden chest discomfort. This occurred because of a pericardial hydatid cyst rupture. Consequently, the patient developed severe dyspnea and hypotension. These symptoms mimicked cardiac tamponade and acute pulmonary edema. Hydatid disease is a parasitic infection caused by Echinococcus granulosus. While it primarily affects the liver and lungs, cardiac involvement occurs in only 0.5% to 2% of cases. Moreover, isolated pericardial involvement is even rarer, representing roughly 7% of those cardiac cases.

Clinical Presentation and Distortion

In this specific case, imaging studies revealed multiple floating daughter cysts within the pericardial sac. Specifically, the rupture caused significant distortion of the mitral annulus. This mechanical interference resulted in severe mitral regurgitation. Furthermore, the accumulation of fluid and cystic material led to tamponade-like symptoms. Therefore, the clinical team initiated emergency stabilization to address the patient's hypotension and orthopnea. Such presentations are critical in endemic regions like India, where livestock farming is prevalent. Early diagnosis remains challenging due to the slow growth of these cysts.

Management of Pericardial Hydatid Cyst

The medical team chose an aggressive treatment strategy to ensure a favorable outcome. Specifically, the patient underwent a cystectomy combined with mitral valve replacement. Additionally, he received postoperative albendazole therapy to mitigate the risk of recurrence. Consequently, the patient remained asymptomatic at a 12-month follow-up. This case emphasizes that clinicians should consider a pericardial hydatid cyst in the differential diagnosis of cardiac tamponade. Combined surgical and medical management is the gold standard for achieving long-term recovery. Ultimately, rapid intervention prevents the lethal complications associated with parasitic rupture.

Frequently Asked Questions

How common is cardiac involvement in hydatid disease?

Cardiac involvement is quite rare, occurring in only 0.5% to 2% of all hydatid disease cases, with the left ventricle being the most frequent site.

What are the primary symptoms of a ruptured pericardial hydatid cyst?

Rupture often presents as sudden chest pain, severe dyspnea, and hypotension, frequently mimicking cardiac tamponade or pulmonary edema.

What is the standard treatment for this condition?

The definitive treatment involves surgical excision (cystectomy) followed by a course of anti-parasitic medication, typically albendazole, to prevent recurrence.

Disclaimer: This content is for informational and educational purposes only. It does not constitute professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Refer to the latest local and national guidelines for clinical practice.

References

Jamiel A et al. Ruptured Pericardial Hydatid Cyst Causing Mitral Annulus Distortion With Severe Mitral Regurgitation and Tamponade-like Symptoms: A Case Report. Am J Case Rep. 2026 Mar 08. doi: 10.12659/AJCR.950600. PMID: 41795796.

Abhishek V, Vijayakumar A. Cardiac hydatid disease: literature review. Asian Cardiovasc Thorac Ann. 2012;20(6):747-50.

Purbey N, et al. Incidental finding of cardiac hydatid cyst during autopsy. Autops Case Rep. 2024;14:e2024501.