case_images: PMC3656682_01
case_images: Echo of the left atrial mass: heterogeneous mass filling the left atrial cavity and causing mitral stenosis.
case_images: cro-0006-0224-g01.jpg
case_images: PMC3656682_01_cro-0006-0224-g01.jpg
case_images: F1
case_images: Echocardiography (echo) revealed a left atrial mass measuring 3.8 x 3.8 cm in diameter, filling the left atrial cavity and extending into the mitral valve during diastole, causing severe mitral stenosis symptomatology (fig. 1).
case_images: Photomicrograph of the osteosarcoma: fleshy, white tumoral mass with irregular discrete margins in the atrial wall.
case_images: cro-0006-0224-g02.jpg
case_images: PMC3656682_01_cro-0006-0224-g02.jpg
case_images: F2
case_images: S-100 negativity excluded the possibility of a malignant nerve sheath tumor with extensive tumoral bone production (fig. 2, fig. 3).
case_images: CT scan of the central pontine mass: hypervascular pontine mass with calcification.
case_images: cro-0006-0224-g04.jpg
case_images: PMC3656682_01_cro-0006-0224-g04.jpg
case_images: F4
case_images: A CT scan of the cranium showed a central pontine mass (3.3 x 3 x 2.5 cm) extending to the right (fig. 4).