Fig. 2
From: Tumor and tumorlike conditions of the pleura and juxtapleural region: review of imaging findings
Diagnosis: solitary fibrous tumor. Technique: standard chest radiography and contrast-enhanced chest CT. Description: A 65-year-old man presented with acute right-sided posterior chest pain. There was no history of weight loss. Postero-anterior and lateral chest radiographs (a, b) show a well-circumscribed mass located posteriorly in the right lower lobe with an incomplete border sign (white arrows), suggestive of an extrapulmonary mass. Axial contrast-enhanced CT (c, d) shows a well-defined, heterogeneous mass with intralesional hypodense areas of necrosis and hyperdense calcifications. Imaging findings were suggestive of a solitary fibrous tumor. Histopathologic examination of the resected mass confirmed this diagnosis, showing signs of malignancy