Atypical lipomatous tumor / well-differentiated liposarcoma. Adipocytes have enlarged, hyperchromatic nuclei. In crush cytology, much larger number of nuclei can be observed, more clearly, than in needle biopsy.
https://t.co/YPHjAqDns5
#bstpath#pathology#cytology
The neoplastic cells have ill-defined cell border and partly connected with each other or connected with osteoclastic giant cells.
骨巨細胞腫です。卵円形から短紡錘形の単核細胞(=腫瘍細胞)は、細胞同士で、また破骨細胞型巨細胞と、手をつなぐようにつながっています。
@JMGardnerMD Thank you for informative cases and comments. Most tumors which I thought “fibrosarcoma” by HE staining were superficial lesion with PDGFB rearrangement. Their final diagnosis is “fibrosarcoma, probably arising from DFSP”.