PMC4927211_01
(a) Chest X-ray shows consolidation on the right upper zone and (b) atypical endothelial cells are CD34 positive.
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On review of his chest radiograph (Figure 1(a)), an area of suspicious homogeneous opacity over the right upper zone lead to a computed tomography (CT) scan of the thorax which showed a heterogeneous enhancing mass within a collapsed right upper lobe and multiple mediastinal and axillary lymphadenopathy. The neoplastic cells were positive for immunohistochemical staining for endothelial markers CD31 and CD34 (Figure 1(b)) and factor VIII, consistent with PEH.
PMC4927211_02
(a) Homogeneous mass with spiculated margins at the anterior segment of the right upper lobe and (b) small epithelioid-like tumour cells at x40 magnification.
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Subsequent chest radiograph and a full-body CT revealed a homogeneous mass with spiculated margins situated at the anterior segment of the right upper lobe (Figure 2(a)). Histopathological examination of the biopsy samples obtained via CT-guided biopsy showed presence of atypical epithelioid-like tumour cells (Figure 2(b)).