right border of heart

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right bor·der of heart

[TA]
the border between the sternocostal and diaphragmatic surfaces of the heart; it is fairly well defined in fixed hearts but is rounded and indefinite in the living heart.
References in periodicals archive ?
A chest X-ray revealed smoothly marginated opacity in the region of the right cardiophrenic angle that partially enclosing the right border of the heart (Fig.