PMC2249601_01
Chest Radiograph.
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F1
The chest radiograph (Figure 1) revealed a well-demarcated, non-cavitating, 3 cm in diameter peripheral opacity in the left lower lobe, with obtuse angles between the lesion and the pleura, and no other abnormalities.
Chest computed tomography (CT).
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F2
Chest computed tomography (CT), (Figure 2) confirmed a 3 x 4 cm, oval-shaped, well-delineated peripheral mass in the left lower lobe, abutting the pleura, homogenous in attenuation and no evidence of mediastinal or axillary adenopathy.
Section of the lung lesion (Hematoxylin and Eosin stain x 40): In this section, the morphology of a spindle cell neoplasm is apparent, with slit-like spaces and normal adjacent lung parenchyma.
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F3
Microscopic examination showed a spindle cell neoplasm, with slit-like spaces and normal adjacent lung parenchyma (Figure 3).
CD99 and Bcl-2 positive spindle-like neoplastic cells (immunohistochemical stain, x 100).
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F4
The above findings were compatible with a monophasic spindle cell type synovial sarcoma in the lung (Figure 4).