Continuous heart murmur in a 26-year-old woman.

In this report, we describe a continuous murmur heard in a young woman at the beginning of her lactation period, which illustrates a typical example of 'Mammary Souffle', described one century ago. Colour Doppler and pulsed-wave mode echocardiogram allowed to precise, for the first time, the arterial nature of increased systolic and diastolic blood flow in tortuous branches of internal mammary artery, most probably responsible of the murmur, after ruling out any other origin of continuous murmur.