case_images: PMC6925941_01
case_images: (a) Hypoechoic mass lesion on ultrasound image. (b) Strip-like blood flow signal of the mass on color Doppler flow image.
case_images: CRIOG2019-3684282.001.jpg
case_images: PMC6925941_01_CRIOG2019-3684282.001.jpg
case_images: fig1
case_images: The ultrasound images depicted multiple, solid, hypoechoic mass lesions in pelvis (Figure 1(a)). Color Doppler flow imaging (CDFI) showed strip-like blood flow signal (Figure 1(b)). The pelvic nodules were composed of close-arranged spindle cells which were featured by nuclear enlargement, pleomorphism and atypia (Figure 1(a)).
case_images: (a) Multiple lobulated, intermediate intensity lesions in T1W image. (b) Intense enhancement of the lesions following contrast administration in T1W image.
case_images: CRIOG2019-3684282.002.jpg
case_images: PMC6925941_01_CRIOG2019-3684282.002.jpg
case_images: fig2
case_images: T1W images (Figure 2(a)). These lesions showed intense enhancement on post enhancement images (Figure 2(b)).
case_images: (a) The largest mass on the surface of retroperitoneum. (b) The gross appearance of the larger two lesions.
case_images: CRIOG2019-3684282.003.jpg
case_images: PMC6925941_01_CRIOG2019-3684282.003.jpg
case_images: fig3
case_images: These nodules scattered located on the surface of retroperitoneum, sigmoid colon and urinary bladder (Figure 3(a)). All the visible lesions were excised including two biggest nodules on retroperitoneum and sigmoid colon (Figure 3(b)).
case_images: (a) HE staining of the sample under microscope (magnification: 200x). The arrow refers to atypical spindle cells. (b) The positive result of immunohistochemistry of desmin, which is a specific protein of muscle cells.
case_images: CRIOG2019-3684282.004.jpg
case_images: PMC6925941_01_CRIOG2019-3684282.004.jpg
case_images: fig4
case_images: On immunohistochemistry, the cells are positive for specific smooth muscle proteins: Desmin[+] (Figure 4(b)), SMA[+], Caldesmon[+].