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Histology of the the left forearm specimen of alveolar soft-part sarcoma. (A) Hematoxylin and eosin staining; original magnifcation, x200. (B) Hematoxylin and eosin staining; original magnifcation, x400.
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Histopathological examination of the specimen confirmed ASPS (Fig. 1).
Computed tomograph images revealing the multiple metastases of (A) the lung, (B) the spleen and (C and D) the brain.
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During the current admission, computed tomography (CT) scans showed metastatic brain, lung and spleen lesions (Fig. 2), with no cardiac lesion.
Computed tomography images revealing a 4.0-cm cardiac mass (arrows) in the (A) upper segment extending to the (B) middle of the interventricular septum.
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Despite the fact that the symptoms associated with cerebral metastasis were alleviated, a repeat CT scan that was performed after two cycles of chemotherapy demonstrated a new mass located in the upper segment and extending to the middle of the interventricular septum (Fig. 3), with contrast enhancement of the rim of the lesion consistent with cardiac metastasis.
Transthoracic echocardiography showing a mass measuring 40 x 21 mm (arrows) within the interventricular septum in (A) the apical four chamber view, and (B) in the short axis view.
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Transthoracic echocardiography was performed and this lesion was identified as a mass measuring 40x21 mm within the interventricular septum (Fig. 4), without remarkable left ventricular outflow tract obstruction.