Cardiac Tamponade in Infant First Manifestation of Primary Hypothyroidism: A Rare Occurrence

We are reporting an infant presented with cardiac tamponade which is the first presentation of previously asymptomatic primary hypothyroidism. After literature search, we found our patient is the first infant from India and the youngest reported as of now, was managed by Pericardiocentesis and thyroxin replacement. In addition, microcytic anemia because of hypothyroidism complicated the case. Hypothyroid-pericardial effusion infant with anemia have never been reported earlier.