03 May 2026
: Case report 
An Unexpected Cause of Marathon Dyspnea: A Diagnostic Challenge in an Amateur Athlete
Challenging differential diagnosis
Martyna Świerkowska ABDEF 1*, Małgorzata Kurpaska
ADEF 2, Paweł Krzesiński ADE 2, Katarzyna Piotrowicz ADE 2
DOI: 10.12659/AJCR.951838
Am J Case Rep 2026; 27:e951838
Figure 2 Coronary angiogram findings: (A) Pre-PCI showing atherosclerotic plaque obstructing 80% of the LAD lumen in segment 6 and causing a critical stenosis of segment 7 (indicated by red arrows). (B) After PCI. Removal of the vascular obstruction. LAD – left anterior descending artery; PCI – percutaneous coronary intervention.