Histologic appearance of de-differentiated (anaplastic) solitary fibrous tumor (SFT), hematoxylin and eosin (H&E)-stained tissue section

From: Mosquera JM, Fletcher CD. Expanding the spectrum of malignant progression in solitary fibrous tumors: a study of 8 cases with a discrete anaplastic component--is this dedifferentiated SFT? Am J Surg Pathol 2009; 33:1314. DOI: 10.1097/PAS.0b013e3181a6cd33. Copyright © 2009. Reproduced with permission from Wolters Kluwer Health. Unauthorized reproduction of this material is prohibited.