Figure 1: (a) Echocardiography showing left atrial mass. (b) Gross photomicrograph shows a gelatinous mass. (c) Histopathology showing irregular glands lined by columnar cells with mucin droplets in a myxomatous stroma (H and E, ×40). (d) Glandular elements positive for CK7 (Immunohistochemical, ×10)