Hydatid Cyst Mimicking a Pericardial Cyst

A 27-year-old female patient presented to our clinic because of atypical chest pain. Her past medical history was unremarkable for any chronic illness. Her vital signs comprised a heart rate of 85 bpm, blood pressure of 125/70 mm Hg, and oxygen saturation of 98%. Physical examination was unremarkable. Electrocardiography showed normal sinus rhythm without any ST-segment and T-wave abnormalities. Her blood work, including electrolytes, complete blood count, hepatic panel, and troponin level, was within the normal limits. Transthoracic echocardiography in the parasternal short-axis view revealed a third chamber besides the left and right ventricles (Figure 1). Modified substernal view showed 2 cysts in the liver (Figure 2). A contrast-enhanced chest computed tomography scan in the axial plane demonstrated 2 cysts in the liver, and there was no pericardial involvement (Figure 3 and Figure 4). The patient was referred for general surgery on the diagnosis of a hydatid cyst.