Situs inversus viscerum is that condition in which the normal arrangement of the viscera is reversed to form a mirror picture of the usual position. Such transposition is usually total but may in rare instances involve either the thoracic viscera or the abdominal viscera alone.
The subject has fascinated the medical profession for more than three centuries. There is a certain romantic distinction conferred on a person who differs so fundamentally in the arrangement of his anatomy from his fellow men.
A brief historical survey shows a case of reversed liver and spleen reported by Fabricius in 1600. Petrius Servius, in Rome, in 1643 recorded a case of transposed viscera. In 1824 the condition was recognized for the first time by a clinician. It was discovered by auscultation and percussion, recently acquired aids to clinical examination.From this time forward the condition has been reported with increasing frequency. In
CLEVELAND M. SITUS INVERSUS VISCERUM: AN ANATOMIC STUDY. Arch Surg. 1926;13(3):343–368. doi:10.1001/archsurg.1926.01130090042003
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