Discussion
Diagnosis With Brief Discussion
- Diagnosis
- Localized fibrous tumor of pleura
- Radiologic Findings
- Chest pa/lateral radiography showed a huge mass in left hemithorax. On CT scan, the mass was arising from left upper pleura and was extending downward, with displacement of heart and pulmonary vessels. It showed soft tissue attenuation and relatively homogenous enhancement on contrast enhanced scans with focal non-enhancing areas. Pleural effusion was also seen.
This case showed increased cellularity, necrosis and pleural effusion. However, mitotic activity was not compatible with malignant SFT and only infarction type necrosis was seen.
- Brief Review
- Solitary fibrous tumors of the pleura (SFTP), are a rare benign pleural-based tumor that accounts for <5% of all tumors involving the pleura. It usually presents in the 6th to 7th decades and there is no recognized gender predilection. There may be a predilection towards the mid to lower zones of the chest. In ~80% of cases, they arise from visceral pleura, with the remainder arising from the parietal pleura.
On radiography, it presents as a pleural based mass and often forms an obtuse angle with the chest wall. Tumors may grow to a large size. Pedunculated lesions can change position and appearance with respiration or with a change in position. Calcification, rib destruction, and pleural effusions are typically not associated features
On CT scan, it tends to have soft tissue attenuation on unenhanced scans and show relatively homogenous intense background enhancement on contrast enhanced scans (from rich vascularization). Non-enhancing areas may be present corresponding to necrosis, myxoid degeneration, or hemorrhage within the tumor. A pedicular attachment may also be seen.
About 20% of SFTs are malignant. Proposed criteria for malignancy include increased cellularity, mitotic activity (>4/10hpf), and necrosis (coagulative necrosis associated with tumor cells).
- References
- 1. Daniel T. G, Aqiba B, Shweta B. Imaging Features of Solitary Fibrous Tumors. AJR 2011;196: 487-495.
2. Cardinale L, Ardissone F, Volpicelli G. CT signs, patterns and differential diagnosis of solitary fibrous tumors of the pleura. J Thorac Dis 2010 Mar; 2(1): 21–25.
3. Cardillo G, Facciolo F, Cavazzana AO et-al. Localized (solitary) fibrous tumors of the pleura: an analysis of 55 patients. Ann. Thorac. Surg. 2000;70 (6): 1808-12
- Please refer to
- Case 43 Case 80 Case 121 Case 179 Case 353 Case 405 Case 530 Case 672 Case 694 Case 702 Case 759 Case 775 Case 781 Case 836 Case 875 Case 940 Case 975
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- Keywords
- Pleura, Benign tumor,