Intracranial malignant solitary fibrous tumor metastasized to the chest wall: A case report and review of literature

Figure 1 Computed tomography scan at admission. A: A plain head computed tomography (CT) scan revealed the postoperative state and an 8 cm × 5.1 cm × 6.5 cm mixed-density mass at the left frontal lobe, accompanying a midline shift (orange arrow); B: A plain chest-abdomen CT scan revealed a 6 cm × 4.1 cm × 6.5 cm low-density mass in the chest wall at the superior segment of the left lung (orange arrow).

Figure 2 Histopathological image of the specimen. A: Specimen of left chest wall mass. A solid proliferation of atypical polymorphic cells, including spindle-shaped cells, multinucleated giant cells, and blood vessels with a wall irregularity are dominant. Mitosis and pericytomatous patterns were also confirmed in part. Hematoxylin and eosin staining (magnified 1000 ×); B: Specimen of left chest wall mass. CD34-positive cells were confirmed through immunohistochemical staining (magnified 1000 ×); C: Specimen of left chest wall mass. STAT6-positive cells were confirmed through immunohistochemical staining (magnified 1000 ×); D: A back-ordered specimen of intracranial tumor. A solid proliferation of atypical polymorphic cells, including spindle-shaped cells, multinucleated giant cells, and blood vessels with a wall irregularity are dominant. Mitosis and pericytomatous patterns were also confirmed in part. Hematoxylin and eosin staining (magnified 400 ×).