case_images: PMC7566176_01
case_images: Chest CT. Mediastinal window; a, b, c. A solid heterogeneous 18x19x12 cm
  mass can be seen within the 2 lower thirds of the right hemithorax,
  causing left shifting of the cardio mediastinum, with compression of the
  bronchus towards the right middle and lower lobes, causing atelectasis
  of these 2 lobes. The mass has border enhancement, there are mediastinal
  adenomegalies of up to 16 mm in the subcarinal station. No pulmonary
  infiltrates are seen.
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case_images: Thoracic X-ray and computed tomography (CT) revealed a large mass with right basal predominance that was encapsulated and non-homogeneous; it occupied 50% to 70% of the right hemithorax (Figures 1 and 2).
case_images: Chest CT. Sagittal reconstruction; the mass is seen in the lower right
  hemithorax, causing eversion of the right diaphragm.
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case_images: Thoracic X-ray and computed tomography (CT) revealed a large mass with right basal predominance that was encapsulated and non-homogeneous; it occupied 50% to 70% of the right hemithorax (Figures 1 and 2).
case_images: (a) H&E 4X. Histological sections show a mesenchymal lesion that is
  arranged in a fascicular and occasionally storiform pattern. The large,
  hyalinized and thick walled vessels are very evident. There is no
  cytological atypia or signs of mitosis. (b) H&E 10X. At higher
  magnification, cells alternate between spindle-cell and round, with
  regular contours, without cytological atypia or mitosis.
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case_images: These results revealed the presence of a malignant fibrous tumor of the pleura and related DPS (Figures 3 and 4).
case_images: (a) BCL2 10X. Immunohistochemistry (IHC) shows intense and global
  positivity for BCL2 in neoplastic cells. (b) CD34 10X. IHC shows intense
  and global positivity for CD34 in neoplastic cells. (c) Ki-67 10X. Ki-67
  proliferative index is up to 40% in some areas.
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case_images: These results revealed the presence of a malignant fibrous tumor of the pleura and related DPS (Figures 3 and 4).
case_images: Chest CT. Four years after initial mass resection image shows (a, b, c,
  d) a 15x9x10 cm right pleural mass that causes inversion of the right
  diaphragm, extrinsic compression of the intermediate bronchus, with
  atelectasis of the middle and lower right lobes. Additionally, another
  4-cm pleural mass is seen in the upper right anterior area (b, c).
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case_images: Pulmonary embolism was ruled out, and lung lesions were identified as SFTP recurrence (Figure 5).
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case_images: (a) H&E 4X. Histological sections show a mesenchymal lesion arranged
  in a fascicular and occasionally storiform pattern. Thick and
  large-walled vessels are evident. (b) H&E 10X. Histological sections
  show a mesenchymal lesion arranged in a fascicular and occasionally
  storiform pattern. Neoplastic cells do not have cytological atypia or
  mitosis. (c) CD34 10X. IHC shows intense and global positivity for CD34
  in neoplastic cells. Vessel walls (except for endothelium) are
  CD34-negative. (d) BCL2 10X. IHC shows intense and global positivity for
  BCL2 in neoplastic cells.
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case_images: The Ki-67 was approximately 20% (Figure 6).