Polysplenia is associated with ______ atrial isomerism.

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Multiple Choice

Polysplenia is associated with ______ atrial isomerism.

Polysplenia signals left atrial isomerism, in which both atrial appendages share left-sided morphology. The hallmark association is multiple spleens (polysplenia) along with other left-sided patterns such as interrupted IVC with azygos continuation. Right atrial isomerism, in contrast, is linked to asplenia and bilateral right-sided features. So the correct completion is left, reflecting the left atrial isomerism pattern seen with polysplenia.

Polysplenia signals left atrial isomerism, in which both atrial appendages share left-sided morphology. The hallmark association is multiple spleens (polysplenia) along with other left-sided patterns such as interrupted IVC with azygos continuation. Right atrial isomerism, in contrast, is linked to asplenia and bilateral right-sided features. So the correct completion is left, reflecting the left atrial isomerism pattern seen with polysplenia.

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