TCTAP C-082 How to Cross a LAD Side Branch CTO Lesion with Severe Calcification

### Patient Initials or Identifier Number Mr. Lee ### Relevant Clinical History and Physical Exam A 62-year-old male patient admitted for chest discomfort started 2 days ago. His coronary risk factors were diabetes mellitus type 2, heavy cigarette smoker. He also had an ischemic stroke with left