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- Title
A case of fat-forming solitary fibrous tumor that is prone to be confused with liposarcoma.
- Authors
Ma, Yi-Dan; Wu, Zi-Qing; Liang, Xin-Rong; Pi, Lin Jing; Gong, Meng-Zhen; Tang, Yao
- Abstract
Fat-forming solitary fibrous tumor is a rare and specific subtype of solitary fibrous tumor. In this case, a mass of 8.3 cm in diameter was found in a 59-year-old male patient's right retroperitoneum, as revealed by abdominal contrast-enhanced computed tomography (CT) images. The tumor exhibited a well-circumscribed nature and histological features characterized by a combination of hemangiopericytomatous vasculature and mature adipose tissue, comprising around 70% of the total tumor composition. Immunohistochemistry staining revealed diffuse positive expression of STAT6 and CD34 in the tumor cells. Based on these findings, the final diagnosis was determined to be a fat-forming solitary fibrous tumor located in the retroperitoneum. It is important to consider other potential differential diagnoses, including angiomyolipoma, dedifferentiated liposarcoma, spindle cell lipoma, and atypical lipomatous tumor/well-differentiated liposarcoma.
- Subjects
PLEURA; LIPOSARCOMA; RETROPERITONEUM; FAT; PATIENTS' rights; TUMORS; COMPUTED tomography; ADIPOSE tissues
- Publication
Diagnostic Pathology, 2024, Vol 19, Issue 1, p1
- ISSN
1746-1596
- Publication type
Article
- DOI
10.1186/s13000-024-01463-8