PMC5769272_01
Radiological presentation. (A) Chest computed tomography viewed on the lung window (axial and coronal) indicated a 3.0x1.1x2.0 cm irregular mass (arrow) with rough edges, which is called 'spiculation sign' in the upper lobe of the right lung. Pleural pull signs were visible around the mass. (B) Mediastinal window of chest enhanced computed tomography scan indicated the inhomogenous density of the mass (arrow). (C) Positron emission tomography-computer tomography scanning of the chest indicated a strong accumulation of fluorin-18 fluorodeoxyglucose (arrow) in the upper lobe of the right lung and the maximum standardized uptake value (SUV) was 14.1.
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Chest enhanced computed tomography scanning revealed a 3.0x1.1x2.0 cm irregular mass with rough edges and inhomogenous density in the apical region of the right upper lobe (Fig. 1). Positron emission tomography-computed tomography scan with fluorin-18 fluorodeoxyglucose further revealed a high radioactivity uptake of this agent at the mass and a maximum standardized uptake value of 14.1 was recorded (Fig. 1).
Pathological presentation presented using Hematoxylin and eosin staining. (A) Alveoli and alveolar ducts were filled with granulation tissue (arrow). Magnification, x40. (B) Alveolar spaces were occupied by fibrous tissue cells and multinuclear giant cells (arrow). Magnification, x100.
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Furthermore, chronic inflammatory cell infiltration and a few scattered mononuclear macrophages were detected in tissue sections (Fig. 2).