Abstract
Left ventricular noncompaction cardiomyopathy (LVNC) was diagnosed in a 59-year-old woman, based on echocardiography. Later, diagnostic criteria were also found positive by cardiac magnetic resonance (CMR). However, coronary angiography revealed thebesian veins were causing the noncompacted appearance. The complementary role of CMR and echocardiography criteria, including flow assessment in the recesses, is discussed. (Level of Difficulty: Advanced.).