An abnormal accumulation of chyle in the pericardium, the membrane surrounding the heart.
From Greek 'chylos' + 'peri' (around) + 'kardia' (heart). This medical compound term describes a rare and serious condition where chyle leaks into the heart's protective sac.
Chylopericardium is genuinely dangerous—it's when chyle collects around your heart instead of traveling through normal channels, and it's so rare that each case gets published in medical journals!
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