Situs inversus totalis associated with subaortic stenosis, restrictive ventricular septal defect, and tricuspid dysplasia in an adult dog.

A rare association between situs inversus totalis (SIT), restrictive ventricular septal defect, severe subaortic stenosis, and tricuspid dysplasia was observed in an adult mixed-breed dog. Primary ciliary dyskinesia and Kartagener's syndrome were excluded. After 15 mo the dog died suddenly. The association between SIT and congenital heart diseases is discussed.