situs inversus
/ˌsʌɪtəs ɪnˈvəːsəs
/ /ˌsiːtəs/noun [mass noun] Medicine
An uncommon condition in which the heart and other organs of the body are transposed through the sagittal plane to lie on the opposite (left or right) side from the usual.
Origin
Late 19th century: from Latin situs inversus viscerum 'inverted placing of the internal organs'.