PMC7403760_01
Chest X-ray showing pleural effusion on the right hemithorax and pneumothorax on the left side.
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F1
Pleural effusion on the right hemithorax and pneumothorax on the left side was detected in the patient's chest X-ray (Fig. 1).Complete blood count and routine biochemical tests were within normal limits.
Contrast-enhanced thorax CT showing a tumour 55 mm x 32 mm x 35 mm heterogeneous semisolid mass compressing the liver in the subdiaphragmatic area.
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F2
A 55 x 32 x 35 mm heterogeneous semisolid mass, which compresses the liver in the subdiaphragmatic area, was detected (Fig. 2).
Contrast-enhanced thorax CT showing 12 mm diameter nodular- enhanced solid lesions on the right hemithorax inferior pleural face.
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F3
There was also nodular thickening with 12 mm size on the right hemithorax pleural face with large pathological lymphadenopathies in the mediastinum (Fig. 3) and around the portal vein of the abdomen.
A) Tumour infiltration consisting of fibroblasts in myxoid stroma in the sub-mesothelial area and small round cells lined with a flattened mesothelium on the surface (x100). B) Tumoural cells with clear cytoplasm infiltrating into adipose tissue (HEx200). C) Non-negative staining of positive tumoural cells in pleural plates on the surface with Oscar Keratin dye (Oscar Keratin 100x). D) MYOD1 positivity in tumoral cells (MYOD x200)
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F4
The pathology resulted in alveolar type RMS consistent with myogenin and desmin positivity (Fig. 4).