PMC9529005_01
ECG at admission, showing flat T wave in I, II, III, AVF, and V1 to V6; ST segment depression in II, III, AVF, and V5; and poor R wave progression in the thoracic leads (V1-V4).
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F1
ECG showed sinus tachycardia, ST-T variation, and poor R wave progression in chest leads (Figure 1).
Images of cine-cardiac magnetic resonance show the thrombi (long arrows) in the apex (A,B). Gadolinium enhanced magnetic resonance imaging show late gadolinium enhancement is in the endocardial layer (C,D).
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F2
Further cardiac MRI tests reported subendocardial myocardial infarction (MI) in the left ventricular free wall, thrombosis in the left and right ventricular apex, mitral regurgitation, left atrial enlargement and pericardial effusion (Figure 2).
Photomicrograph with different magnifications (A, x10 and B, 40x) of bone marrow biopsy showing significant proliferation of eosinophilia (deep pink cells).
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F3
Bone marrow biopsy indicated that hematopoietic cells were proliferating and active, mainly eosinophils (Figure 3).