Conclusion:
The case emphasizes the importance of differential diagnosis when
patients present with recurrent STEMI-like symptoms despite optimal
invasive treatment. The patient was finally diagnosed within three weeks
of the first presentation. Cardiac involvement is a late presentation of
metastatic lung cancer, so the outcome might not change, but unnecessary
invasive studies could have been avoided. Discussing the management of
invasive lung carcinoma with cardiac metastasis is beyond the scope of
this article.