Figure 1
Pelvic computed tomography image showing an unclear defined 11 cm pelvic mass without further abnormalities.
Figure 2
Magnetic resonance imaging and macroscopic findings. (A) T2-weighted image and (B) diffusion-weighted image depicting a high signal intensity in the uterine fibroid.
Figure 3
Dense long spindle cell configurations and hyaline stromal changes under hematoxylin and eosin staining. (A) 40× (scale bar 250 μm), (B) 100× (scale bar 100 μm), (C) 400× (scale bar 50 μm), and (D) 400× (scale bar 50 μm).
Figure 4
Immunohistochemistry of the UTROSCT. The tumor was positive for (A) CD10 (2+), (B) CD99 (3+), (C) CD34 (+), (D) desmin (3+), (E) ER (3+), (F) PR (3+), (G) SMA (3+), and (H) Ki67 (15%+); magnification: 100× (scale bar 100 μm). The antibodies used were as follows: anti-calretinin (catalog No. CCR-0221, Sainuote Biological Technology Co., China; 1:50); anti-CD10 (catalog No. C6D1; Sainuote Biological Technology; 1:50), anti-CD117 (catalog No. EP10, Sainuote Biological Technology; 1:50), anti-CD99 (clone: 013; catalog No. GT212302, Sainuote Biological Technology; 1:50), anti-CD34 (clone: QBend/10; Sainuote Biological Technology; 1:50), anti-D2-40 (catalog No. D2-40, Sainuote Biological Technology; 1:50), anti-desmin (catalog No. C3B7, Sainuote Biological Technology; 1:50), anti-ER (catalog No. FNab02822, Wuhan Feieng Biological Technology Co., China; 1:50), anti-PR (catalog No. YZK7169, Shanghai Yanzhun Biological Technology Co., China; 1:50), anti-SMA (catalog No. C1C1; Sainuote Biological Technology; 1:50), and anti-Ki67 (catalog No. C3G4, Sainuote Biological Technology; 1:50). ER, estrogen receptor; PR, progesterone receptor; SMA, α smooth muscle actin (actin α-2 (ACTA2)); UTROSCT, uterine tumor resembling ovarian sex-cord tumor.