Which condition is characterized by complete mirroring of visceral organs?

Situs inversus totalis is characterized by the complete mirroring of the visceral organs. In this condition, the internal organs are positioned in a mirror image of their normal anatomical positions. For example, the heart may be located on the right side of the chest instead of the left, and other organs, such as the stomach and spleen, are also transposed.

This congenital condition does not necessarily affect the function of the organs, so individuals may remain asymptomatic. However, it can lead to complications, particularly in the case of acute abdominal pain, as proper diagnosis may be challenging due to the non-standard arrangement of organs.

In contrast, Meckel-Gruber Syndrome is a genetic disorder associated with renal cystic disease and other anomalies, but it does not specifically relate to the mirroring of internal organs. Primary Ciliary Dyskinesia involves defects in the cilia leading to respiratory and fertility issues but is unrelated to organ placement. Sotos Syndrome is typically characterized by overgrowth and cognitive challenges rather than organ mirroring. Therefore, situs inversus totalis is the appropriate answer, as it specifically describes the condition of complete reversal of organ positioning within the thoracic and abdominal cavities.