PMC3350187_01
(a) Computed tomography shows a large bladder tumor measuring 4 cm x 3 cm and right hydronephrosis. (b) Magnetic resonance imaging shows extravesical invasion of the tumors. (c) Hematoxylin-eosin stain shows leiomyosarcoma of the bladder tumor. (d) Immunohistochemical staining of the bladder tumor is positive for alpha-smooth muscle actin.
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PMC3350187_01_CRIM.UROLOGY2011-532081.001.jpg
fig1
Computed tomography (CT) revealed a large bladder tumor measuring 4 cm x 3 cm and right hydronephrosis (Figure 1(a)), and magnetic resonance imaging revealed extravesical invasion and pelvic wall invasion of the tumors (Figure 1(b)). A final histopathological diagnosis of leiomyosarcoma was made based on immunohistochemical staining, which revealed positive staining for alpha-smooth muscle actin and vimentin and negative staining for cytokeratin (Figures 1(c) and 1(d)).