Last revised by Henry Knipe on 25 May 2023

Mesocardia is a condition in which the heart is longitudinally oriented along its long axis in the midline 1.

Cardiac position refers to the anatomical position of the left ventricular apex in the thorax. The heart has three positions:

Mesocardia is extremely rare. It represents only 0.2% of cardiac anomalies 3.

Mesocardia is usually associated with cardiac structural abnormalities, heterotaxy syndrome, chromosomal disorders and genetic syndromes. Occasionally, it is isolated findings 2.

Mesocardia is an embryonic condition before the formed heart takes a position towards right or left and acquires an apex 1.

The heart is in the center of chest with a tear drop appearance 2.

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