PMC5769213_01
(A) Contrast-enhanced computed tomography (CT) scan revealed a solitary sharp homogeneous enhancing mass on the left chest wall, abutting the pleura, sized 12x10x8 cm. Pleural effusion was not observed. (B) The preoperative cranial CT scan revealed no masses in the brain.
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A cranial CT scan revealed no abnormal masses in the brain (Fig. 1B).
Pathology results of the pleural mass. Papillary formations or sheets of spindle cells were observed, with cellular atypia, nuclear fission and focal bubble-like cells observed on high magnification. Hematoxylin and eosin staining, magnification (A) x50, (B) x100 and (C) x200. (D) Immunohistochemical examination revealed that the tumor cells were positive for PCK, CK7, CK18; magnification, x100. The tumor cells were negative for epithelial membrane antigen, calretinin, CK5/6, P63, CD34, Wilms tumor-1, CD31, ERG and leukocyte common antigen.
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These characteristics were consistent with the diagnosis of SMPM (Fig. 2).
On postoperative computed tomography examination, masses were identified (A) in the right frontal lobe (~1 cm), (B) in the right parietal lobe (~2 cm) and (C) in the basal ganglia region of the right hemisphere (~2 cm). Edema was observed in the brain tissue surrounding the masses.
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There was edema surrounding the mass lesions (Fig. 3A-C).