{Reference Type}: Case Reports {Title}: Rapidly Moving Vanishing Tumor of the Lung After Open-heart Surgery. {Author}: Sato H;Takahashi J;Bekki M;Shibata R;Shibao K;Sato H;Nohara S;Honda A;Itaya N;Chibana H;Fukumoto Y; {Journal}: Kurume Med J {Volume}: 68 {Issue}: 2 {Year}: Jul 2023 3 暂无{DOI}: 10.2739/kurumemedj.MS682004 {Abstract}: Vanishing tumor of the lung, also known as phantom tumor, is uncommonly observed in congestive heart failure. We report a case of a vanishing tumor that rapidly disappeared and reappeared in just a few minutes due to repositioning in a patient after open-heart surgery.