Figure 3
From: Malignant solitary fibrous tumor of the pleura slowly growing over 17 years: case report
Intraoperative and pathologic finding. (A) Posterolateral thoracotomy revealed a large encapsulated mass measuring 16×11×7 cm that weighed 1,040 g. The mass was pedunculated and attached to the visceral pleura of the right lower lobe (arrowhead). (B) Microscopic findings, including marked cellularity, nuclear atypism, presence of mitosis, and necrosis, confirmed the diagnosis of a malignant SFTP.