Figure 6.

A 61-year old woman with benign localized fibrous tumor of the pleura originating from the costal pleural space. Axial and coronal contrastenhanced chest CT respectively show a 2 cm, semilunar, pleura-based soft nodular tissue (42 UH) with obtuse tumor-pleura angle (arrow) (a) in the left middle hemithorax, demonstrating a slightly homogeneous enhancement pattern. Corresponding histopathology on surgical specimen (c): a hypocellular area with discreetly hyalinized keloidal collagen tissue is observed 100× E-E.