SummaryA 54-year-old woman was referred to our echocardiography clinic for long-standing hypertension. She did not have any chest pain, dyspnoea, fever or weight loss. She was on losartan of dose 25?mg twice daily. She did not have history of contact with livestock or pet animals. Electrocardiogram showed T-wave inversion in V1–V3 leads. On transthoracic echocardiography, there was a large mass in the interventricular septum (Fig. 1, Videos 1 and 2). Computerised tomography (CT) of the chest showed a cystic mass (85×65?mm) over the interventricular septum with a rim-like calcification of its wall consistent with cardiac hydatid cyst (Fig. 2). The lungs appeared normal and free of disease. CT images of the brain and the abdomen were otherwise normal with no cerebral or hepatic involvement. The patient underwent surgery and pathological examination was consistent with echinococcal hydatid cyst (Fig. 3). She made full recovery following surgery (Video 3).Download Figure
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