A case report of an iatrogenic coronary cameral fistula treated by retrograde percutaneous coronary intervention

BACKGROUND: Acquired coronary cameral fistula is an extremely rare condition that involves an abnormal communication between a coronary artery and a cardiac chamber. It usually occurs after chest trauma or cardiovascular interventions, such as percutaneous coronary intervention (PCI) and is associated with various outcomes, ranging from a stable status to haemodynamic instability. Acquired coronary cameral fistula frequently arises from the right coronary artery and drains generally into the right ventricle. CASE SUMMARY: We report the unusual case of a 56-year-old male patient referred to an invasive cardiology centre for a suspected left anterior descending (LAD) coronary–left ventricular (LV) fistula resulting from a primary PCI for an anterior ST-elevation myocardial infarction. Here, the confirmed LAD–LV fistula was successfully treated by retrograde PCI with covered stent implantation. Clinical and angiographic outcomes were favourable at 1-month follow-up. DISCUSSION: Coronary cameral fistula can be a severe complication of primary PCI. Various treatment strategies can be considered based on haemodynamic status and anatomical features. In the case described herein, the use of a retrograde approach led to permanent fistula closure and complete revascularization.