PMC7385038_01
A. Transthoracic echocardiography findings. B. Computed tomography findings.. Massive pericardial effusion and large tumor were detected.. PE: pericardial effusion, LV: left ventricle.
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Transthoracic echocardiography and computed tomography showed massive pericardial effusion, with a maximum diameter of 53 mm at the apex of the pericardial sac and a large tumor (95 x 99 mm in diameter) occupying the lateral to posterior pericardial space (Fig. 1A, B).
Preoperative coronary arteriography findings.. Feeding vessel of the tumor extends from the circumflex branch (white arrows).
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Coronary angiography revealed that feeding vessels of the tumor extended from the circumflex artery (Fig. 2).
A. Operative findings.. The large tumor occupies the lateral to posterior pericardial space (dotted circle).. LV: Left ventricle, RV: Right ventricle.. B. Resected tumor.
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The large tumor was adherent to the epicardium and pericardium and extended from the lateral to posterior side (Fig. 3A). The weight of the resected tumor was 480 g (Fig. 3B).
Histopathological findings of the resected tumor.. The histopathological examination showed dense proliferation of spindle cells with hemorrhage and necrosis.
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The histopathological diagnosis of the resected tumor specimen was malignant mesothelioma, sarcomatoid type (Fig. 4).
A. Computed tomography findings from postoperative day 10.. The mass is almost gone.. B. The findings of computed tomography 2.5 months after surgery.. The regrown mass occupies the pericardial space and compresses the left ventricle (LV).
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Postoperative computed tomography showed reduction of the tumor mass (Fig. 5A). However, 2.5 months after surgery, the tumor regrew and compressed the left ventricle (Fig. 5B).