Echinococcosis is caused by echinococcus granulosis eggs ingested by human beings and thus passing to the portal circulation and reaching the liver and lungs. Other organs, such as the spleen, kidneys, brain, bones or heart, are rarely infested with parasites. Cardiac location is extremely rare (less than 2 %) (3,8). This disease is common in sheep and cattle raising countries. Eosinophilia is not constant and serologic tests (latex agglutination and immunoelectrophoresis) may be negative in hydatidosis.Transthoracic echocardiography (TTE) is a method with well established diagnostic value in cardiac hydatid disease. The right atrial and right ventricular hydatid cysts were found by TTE in a 77-year-old man who had experienced an episode of a transient ischemic attack. Both cysts were removed successfully with surgery to prevent potentially lifethreatening complications.
Case reportA 77-year-old man was referred to our clinic for right atrial and right ventricular hydatid cysts. There was no abnormality except for apical holosystolic murmur (grade I/VI) in physical examination. He had a history of liver hydatid cyst operation 17 years ago and was a smoker for 50 years. One month ago, he had been admitted to the neurology department because of right sided neurologic deficit lasting 12 hours. Colour doppler ultrosonography of the carotid arteries identified no lesion that could be an embolic source. At that time, magnetic resonance imaging (MRI) revealed a chronic infarction area in the left occipital lobe and a macroadenoma in the hypophysis. Although diffusion weighted (DW)-MRI identified no acute infarction in the brain, immediate therapy with intravenous heparine 1000 IU/hr and oral coumadine in the following day were begun. Hormonal profile revealed hypothyroidism with a high thyroid stimulating hormone level, normal growth hormone, prolactin, adrenocorticotropic hormone, and cortisole levels. Thyroid hormone replacement was begun after endocrinology consultation. The electrocardiogram showed atrial fibrillation and right bundle branch block. Slight cardiomegaly was present in his chest x-ray. The transthoracic echocardiography for embolic etiology revealed a mobile cyst (3.0x3.5 cm in size) in the right atrium and another large trabeculated partially calcified cyst located on the anterior wall of the right ventricle (4.0x5.0 cm in size) below the tricuspid valve and protruding into both the right atrium and ventricle. When considering the patient's past history, the cystic structure of the lesions reminded the echocardiographer of hydatid disease rather than solid lesions like myxoma or any other infective pathology. There was not any thrombus in the left atrium and ventricle. Mild mitral and aortic insufficiency was seen in colour doppler echocardiography. Transesophagial echocardiography (TEE) confirmed the cardiac cysts and revealed no additional pathology. Cardiac cysts were also demonstrated by computed tomography (CT) and no other cysts in the lungs, liver and great blood vessels were seen. Summary: Hy...