Myocarditis of various causes can result in segmental
left ventricular dysfunction and, rarely, aneurysm
formation. Although it is uncommon, small
left ventricular aneurysms can arise even in the
presence of preserved global left ventricular systolic
function, probably secondary to intense inflammation.
However, this patient’s MRI showed
disease that was confined to the apical myocardium,
rather than the more diffuse pattern of ventricular
involvement that is common in myocarditis.
The two-chamber
view from the same sequence, obtained during
systole, shows increased ballooning of the
left ventricular apical aneurysm that is markedly
abnormal as compared with the remainder of the
left ventricular myocardium .
しかしながら、この患者のMRIは、心筋炎において一般的なものより拡散したパターンの心室の関与ではなく、先端心筋に限定された症状を示しました。
心収縮中に得られた同じシーケンスからの2室表示は、左の心室の心筋の残りと比較して、著しく異常な左室先端動脈瘤のさらなる拡張を示しました。