case_images: PMC9706000_01
case_images: Enhanced CT scan shows pelvic hemorrhage. (A) Side view, (B) Front view.
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case_images: f1
case_images: A pelvic CT scan showed that the bladder can be filled, there is a 7.4cm-diameter spherical kind of oval low-density shadow above the bladder and a space-occupying lesion above the bladder, as well as large number of pelvic lesions with massive accumulation of blood about 1000ml. ( Figures 1A, B ) The initial diagnosis was bladder mass and pelvic hemorrhage based on the patient's symptoms and auxiliary examinations, and the specific cause is unknown.
case_images: Macroscopic view of pathological specimens.
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case_images: f2
case_images: Gross pathology showed a 12*6.5*4 cm tumor that was gray-white, gray-red and translucent. ( Figure 2 ) Microscopic examination showed spindle cell tumor with mucinous background, chronic inflammatory cell infiltration, and erythrocyte extravasation, with unclear local boundaries and invasion of surrounding muscle tissue.
case_images: Final pathology results showed extensive fibrocytic and inflammatory cell infiltration.
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case_images: PMC9706000_01_fonc-12-948263-g003.jpg
case_images: f3
case_images: Immunohistochemical findings: CK broad (+), Vimentin (+), ALK (+), SMA (partially weak +), Desmin (partially +), S-100 (-), Ki-67 index (5%)( Figure 3 ).