PMC2823048_01
The posteroanterior (A) and lateral (B) chest radiograph revealed a round mass lesion (arrows) in the left anterior chest.
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F1
The posteroanterior and lateral chest radiograph revealed a round mass lesion in the left anterior chest (Fig. 1).
Sonography showed a well defined, oval shaped, hypoechoic mass (arrows) involving a rib (arrowhead).
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F2
Sonography showed a well defined, oval shaped, hypoechoic mass involving a rib, which measured 4.2x1.9x4.5 cm (Fig. 2).
CT demonstrated the presence of a relatively well defined, ovoid shaped mass at the anterior chest wall. A. Bony infiltration (arrow) and defect (arrowhead) was suggestive of the tumor having a malignant nature. The interface between the mass and the lung was smooth, and compression of the lung was observed. B. The mass showed heterogeneous weak enhancement (arrow). There was no mediastinal lymph node enlargement.
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F3
The mass showed heterogeneous weak enhancement (Fig. 3).
The WBBS revealed markedly increased bony uptake (arrow) of the left 3rd anterior rib without other abnormal uptake on the whole skeletons.
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F4
The WBBS revealed markedly increased bony uptake with a central photon defect of the left 3rd anterior rib (Fig. 4).
Gross specimen showed a multilobulated pinkishwhite solid mass.
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F5
The gross specimen showed a multilobulated pinkish-white solid mass which adhered to and infiltrated the inner surface of the rib (Fig. 5).
Microscopic findings. A. The mass adhered to and infiltrated the inner surface of the rib (arrow). One segment of the mass (arrowhead) situated within the bony defect (H-E stain, x 40). B. Storiform arrangement of malignant cells, including a plump cytoplasm and a few mitotic figures, was suggestive of storiform-pleomorphic malignant fibrous histiocytoma (H-E stain, x 100).
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F6
One segment of the mass situated within the bony defect (Fig. 6A).