PMC8348904_01
A - Chest radiography showed a homogenous opacity in the middle-to-lower left lung field. B, C - Computed tomography of the chest showed a pulmonary mass, measuring 11 x 14 cm, extending from the costal pleura to the hilum.
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A chest X-ray showed a large homogenous opacity in the middle-to-lower left lung field, which was confirmed by a chest computed tomography (CT) describing bronchopulmonary mass, measuring 11 x 14 cm, extending from the costal pleura to the hilum, without enlargement of the mediastinal nodes (Fig. 1A-D).
FDG-PET CT scan showed a pulmonary mass with low metabolic uptake.
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On the FDG-PET CT scan, the mass presented low metabolic uptake (Fig. 2).
A - The resected specimen disclosed mesenchymal neoplasm with moderate cellularity, with oval and fusiform nucleated cells. B - Fusiform nucleated cells with hemangiopericytic vessels. C - Immunohistochemical strong and diffuse nuclear expression of STAT6.
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Microscopically, irregular fascicles of spindle cells, with hipercellularity, numerous blood vessels with sclerosing walls, focal hemorrage, several areas of necrosis and mitotic figures (3 mitoses per 10 high power fields) were present.