19 August 2026
: Case report 
Malignant Soft Tissue Tumor Mimicking Chronic Expanding Hematoma After a Long Clinical Course: A Case Report
Rare disease
Itaru Ogawa
ABDEF 1, Yoichi Kaneuchi ABDEF 1, Takeo Suzuki ABDF 1, Fumiya Ara BF 1, Shoki Yamada BDE 2, Osamu Hasegawa BDE 3, Michiyuki Hakozaki ABDEF 1,4*, Yoshihiro Matsumoto ADE 1
DOI: 10.12659/AJCR.953515
Am J Case Rep 2026; 27:e953515
Figure 6 High-power views of H&E staining and immunohistochemical stainings of the surgical specimenSolid proliferation of the tumor cells is observed (A, × 200) (bar, 100 μm). The tumor cells show diffuse positivity for vimentin (B, × 200) and CD99 (C, × 200), and focal positivity for EMA (D, × 200), but negativity for AE1/AE3 (E, × 200) and desmin (F, × 200) (bars, 100 μm).