Hydatid Cyst of Right Atrium.

A 70-year-old male presented with dyspnea New York Heart Association (NYHA) class II since 1994. Dyspnea was not progressive. There was no history of cough, fever, chest pain, or palpitation. He was investigated and was told to have some abnormality in his heart and was advised surgery. Since patient was not very symptomatic, he did not undergo surgery. He did not have any record of his ailment. This time he was referred to us for fitness for noncardiac surgery. His electrocardiogram (ECG) showed normal sinus rhythm and right atrial (RA) enlargement. His echocardiography showed large cystic mass in his RA, occupying almost three-fourth of RA (Fig. 1). His noncontrast contrast-enhanced computed tomography (NC CECT) of thorax was done. It showed well defined cystic lesion with internal heterogeneous contents and calcification along its wall in RA, measuring 8.1 × 8.3 × 8.4 cm, suggestive of hydatid cyst of RA (Fig. 2).