PMC4681972_01
A. is the chest-X-ray, B. the CT scan of the thorax.
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Because of a rounded mass appearing at the lower right side of his chest radiograph (Fig. 1A), the patient underwent a chest CT scan. The CT scan displayed a large right-sided heterogeneous but well circumscribed soft tissue mass arising from the pleural surface, which contained central areas of low density, with absence of local invasion (no chest wall or heart infiltration) (Fig. 1B).
A. the picture during the operation, B. the picture of the mass with the ruler.
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Diagnosis was obtained by a transthoracic cutting needle biopsy, and confirmatory diagnosis was made with the pathological examination of the specimen which was completely resected during a right lateral open thoracotomy (Fig. 2A). Histopathological examination of the mass (Fig. 2B) demonstrate hypocellular and hypercellular areas simultaneously, separated by fibrous stroma; hypercellular areas were composed of bland spindle-cells arranged in short fascicules.
The laboratory picture of the immunohistochemical staining.
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Immunohistochemical staining showed that the tumor cells were strongly positive for CD34 (Fig. 3), bcl-2 and vimentin which confirmed the diagnosis of SFTP.