PMC7775178_01
(a) Axial CT enhanced with intravenous contrast, mediastinal window. (b) Axial CT, pulmonary window. (c, d) Three-dimensional reconstruction using the CT of the chest (right ribs removed). Paraspinal oval mass in the lower thoracic spine measuring 20 mm in diameter. The capsule enhances slightly with contrast. The tumor is well-circumscribed without intraspinal extension. The callus formations in the posterior ribs (7th to 11th) can be observed, suggesting previous rib fractures (c, d; arrowheads).
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fig1
The capsule of the mass was slightly enhanced with intravenous contrast (Figures 1(a) and 1(b)). Close to the tumor, callus formations were observed on the 7th through 11th ribs posteriorly, suggestive of previous nondisplaced rib fractures (Figures 1(c) and 1(d)).
(a) Intraoperative picture of the subpleural mass, with stapler applied. (b) Wedged-out section of the left lower lobe, showing the subpleural mass. (c) Microphotographs of sections stained with Victoria blue and HE stain. (d) High-power field of the rectangle in (c). The elastic layer of the visceral pleura is stained in blue. The hematoma was located inside the visceral pleura, indicating that the lesion is intrapulmonary. Scale bars in (c, d) are 2 mm and 250 mum, respectively.
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fig2
The tumor was resected using wedge resection of the left lower lobe and pathologically diagnosed as SPH (Figure 2).