Right Atrium Hydatid Cyst at the Septal Leaflet of the Tricuspid Valve, Underwent TVR

Echinococcus is an infection caused in human by the larval stage of Echinococcus granulosus, Echinococcus multilocularis, or Echinococcus vogeli. Slowly enlarging echinococcal cyst generally remains asymptomatic until their expanding size or their space occupying effect in an involved organ elicits symptoms. The most pathognomonic finding, if demonstrable is that of daughter cyst within the larger cyst. A specific diagnosis of E. granulosus infection can be made by the examination of aspiration fluid for protoscolices, but this is not recommended due to fear of spillage and anaphylactic reactions. Serodiagnostic assays can be useful, although a negative test doses not exclude the diagnosis of echinococcosis. Detection of antibody to specific echinococcal antigen by immunoblotting has the highest degree of specificity. The liver and the lungs are the most common sites of these cysts. Cardiac hydatid cysts are found in fewer than 2% of cases of hydatidosis. In 50% of such cardiac cases, there is multiple organ involvement. A 26-year-old female presented to our emergency department with dyspnea on exertion, and a mass lesion in her right atrium, her Investigations and pre-operative transthoracic echocardiography revealed the mass located in the right atrium at the septal leaflet of the Tricuspid Valve, which was confirmed a hydatid cyst during intraoperative intervention, along with no cysts of the lungs and liver. The lesion was successfully resected, and the tricuspid valve was replaced under Cardiopulmonarybypass.