PMC3179900_01
Paracardiac mass on transthoracic echocardiography.
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Two years ago a mass was observed near the left cardiac margin measuring 6.5 x 5.7 cm in a modified left parasternal view of the transthoracic using echocardiography (Figure 1).
A well-circumscribed mass at the middle lung field.
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On chest roentgenogram, a well-circumscribed mass in the middle zone of the left lung field was observed (Figure 2).
Computed tomography shows a homogeneous large cystic mass with a small solitary nodular area at the inferior margin.
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These two masses were both well defined and homogeneous (Figures 3 and 4).
Computed tomography shows homogeneous cystic mass at the costosternal junction.
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These two masses were both well defined and homogeneous (Figures 3 and 4).
Operative view after sternotomy and preserving nervus vagus; huge mass occupying aortic arch.
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The chest was opened by sternotomy, and a huge encapsulated mass was observed dwelling the aortic arch and the left pulmonary artery with a proximal extension to the ascending aorta (Figure 5).
Resected encapsulated mass.
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The cut surfaces had a bright, tan/yellow, gelatinous appearance, and a small solid area was observed in the larger one (Figures 6 and 7).
Cut surface of the mass; gelatinous, tan/yellow appearance with a solid area at the edge.
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The cut surfaces had a bright, tan/yellow, gelatinous appearance, and a small solid area was observed in the larger one (Figures 6 and 7).
Atypical cells in hypercellular area (H&E; 50).
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Immunohistochemical analysis was positive for S-100 protein (Figures 8 and 9).
S-100 positivity in atypical cells.
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fig9
Immunohistochemical analysis was positive for S-100 protein (Figures 8 and 9).